20th century
Resource Information
The temporal indicator of 20th century represents a chronological context associated with resources found in Portland Public Library.
The Resource
20th century
Resource Information
The temporal indicator of 20th century represents a chronological context associated with resources found in Portland Public Library.
- Label
- 20th century
A sample of Items that are about the Temporal 20th century See All
Context
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Subfocus of
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- ACT UP New York (Organization) -- History -- 20th century
- AIDS (Disease) -- California | San Francisco -- History -- 20th century
- AIDS (Disease) -- History -- 20th century -- Fiction
- AIDS (Disease) -- History -- 20th century -- Juvenile fiction
- AIDS (Disease) -- United States -- History -- 20th century
- Abduction -- China -- History -- 20th century
- Abduction -- China -- History -- 20th century
- Ability -- United States -- Testing | History -- 20th century
- Abortion -- Government policy -- France -- History -- 20th century -- Drama
- Abortion -- Law and legislation -- United States -- History -- 20th century
- Abortion -- United States -- History -- 20th century
- Abstract expressionism -- New York (State) -- Exhibitions. -- 20th century
- Abstract expressionism -- New York (State) | New York -- 20th century -- Exhibitions
- Abstract expressionism -- United States -- 20th century
- Abstract expressionism -- United States -- 20th century -- Exhibitions
- Abuse of administrative power -- United States -- 20th century -- Drama
- Accident victims -- England -- 20th century -- Fiction
- Accrington (England) -- History -- 20th century -- Biography
- Acquisitions (Libraries) -- United States -- History -- 20th century
- Acquisitions (Libraries) -- United States -- History -- 20th century
- Acrylic painting -- 20th century
- Actors -- Austria -- 20th century -- Biography
- Actors -- United States -- 20th century -- Biography
- Actresses -- California | Los Angeles -- 20th century -- Fiction
- Actresses -- France -- 20th century -- Biography
- Addison (Me.) -- Social conditions -- 20th century
- Adirondack Mountains (N.Y.) -- History -- 20th century -- Fiction
- Adirondack Mountains (N.Y.) -- History -- 20th century -- Juvenile fiction
- Adoption -- United States -- History -- 20th century
- Adoption -- United States -- History -- 20th century
- Adoption agencies -- Corrupt practices -- United States -- History -- 20th century
- Adoption agencies -- Corrupt practices -- United States -- History -- 20th century
- Advance copies (Printing) -- 20th century
- Advertising -- Beer -- United States -- History -- 20th century
- Advertising -- Perfumes industry | History -- 20th century
- Advertising -- United States -- History -- 20th century
- Advertising agencies -- United States -- History -- 20th century
- Advertising specialties -- History -- 20th century -- Catalogs
- Advertising, Outdoor -- United States -- History -- 20th century
- Aerial reconnaissance -- 20th century -- History
- Aerodynamics -- Research -- United States -- History -- 20th century
- Aeronautics -- Competitions | History -- 20th century
- Aeronautics -- Competitions | History -- 20th century
- Aeronautics -- History -- 20th century
- Aeronautics -- History -- 20th century
- Aeronautics -- Safety measures | Research -- United States -- History -- 20th century
- Aeronautics -- United States -- History -- 20th century
- Aeronautics -- United States -- History -- 20th century
- Aeronautics -- United States -- History -- 20th century
- Aeronautics and state -- United States -- History -- 20th century
- Aeronautics, Commercial -- History -- 20th century
- Aeronautics, Commercial -- United States -- History -- 20th century
- Aeronautics, Military -- Technological innovations | History -- 20th century
- Aeronautics, Military -- United States -- History -- 20th century
- Aesthetics, Modern -- 20th century
- Afghanistan -- History -- 20th century
- Afghanistan -- History, Military -- 20th century
- Afghanistan -- Social conditions -- 20th century
- Afghanistan -- Social conditions -- 20th century
- Afghanistan -- Social conditions -- 20th century -- Fiction
- Africa -- Colonization | History -- 20th century
- Africa -- History -- 20th century
- Africa -- History -- 20th century
- Africa -- History -- 20th century -- Fiction
- Africa -- History -- 20th century -- Fiction
- Africa -- History -- 20th century -- Fiction
- Africa -- Intellectual life -- 20th century -- Fiction
- Africa -- Politics and government -- 20th century
- Africa -- Social life and customs -- 20th century
- Africa, Central -- Ethnic relations | Political aspects -- 20th century
- Africa, East -- Colonization | History -- 20th century -- Fiction
- Africa, East -- History -- 20th century -- Fiction
- Africa, Sub-Saharan -- 20th century
- African American Baptists -- Southern States -- History -- 20th century
- African American Catholics -- History -- 20th century
- African American actresses -- Political activity | History -- 20th century
- African American art -- 20th century
- African American art -- 20th century -- Exhibitions
- African American art -- 20th century -- Exhibitions
- African American art -- 20th century -- Themes, motives -- Exhibitions
- African American art -- 20th century | 21st century -- Exhibitions
- African American art -- Exhibitions. -- 20th century
- African American artists -- History -- 20th century -- Exhibitions
- African American artists -- History -- 20th century -- Exhibitions
- African American artists -- New York (State) | New York -- 20th century -- Exhibitions
- African American arts -- 20th century
- African American arts -- 20th century -- Juvenile literature
- African American arts -- New York (State) | New York -- History -- 20th century -- Sources | Exhibitions
- African American athletes -- Social conditions -- 20th century
- African American athletes -- Social conditions -- 20th century
- African American authors -- 20th century -- Biography
- African American automobile drivers -- History -- 20th century
- African American automobile drivers -- History -- 20th century -- Juvenile literature
- African American cartoonists -- History -- 20th century
- African American children -- Alabama | Birmingham -- History -- 20th century
- African American children -- Political activity -- Alabama -- History -- 20th century
- African American churches -- Alabama | Birmingham -- History -- 20th century
- African American churches -- Fires and fire prevention -- Southern States -- History -- 20th century
- African American civil rights workers -- History -- 20th century
- African American civil rights workers -- Mississippi -- History -- 20th century
- African American civil rights workers -- Mississippi -- History -- 20th century -- Juvenile literature
- African American college students -- Political activity | History -- 20th century
- African American dance -- United States -- History -- 20th century
- African American dramatists -- 20th century -- Biography
- African American families -- Economic conditions -- 20th century
- African American families -- Louisiana | New Orleans -- 20th century
- African American fighter pilots -- History -- 20th century -- Drama
- African American football coaches -- History -- 20th century
- African American football coaches -- Texas -- History -- 20th century
- African American football players -- History -- 20th century
- African American football players -- Texas -- History -- 20th century
- African American girls -- Education | History -- 20th century
- African American girls -- Illinois | Chicago -- Social conditions -- 20th century
- African American girls -- Illinois | Chicago Region -- Social conditions -- 20th century
- African American girls -- Mississippi -- Social conditions -- 20th century
- African American high school students -- Texas -- History -- 20th century
- African American intellectuals -- History -- 20th century
- African American iron and steel workers -- History -- 20th century
- African American labor union members -- United States -- History -- 20th century
- African American men -- Social conditions -- 20th century
- African American men -- Social conditions -- 20th century
- African American motion picture actors and actresses -- Political activity | History -- 20th century
- African American mural painting and decoration -- 20th century
- African American mural painting and decoration -- New York (State) | New York -- 20th century
- African American neighborhoods -- Oklahoma | Tulsa -- History -- 20th century
- African American neighborhoods -- Oklahoma | Tulsa -- History -- 20th century -- Juvenile literature
- African American novelists -- 20th century -- Biography
- African American nuns -- History -- 20th century
- African American painting -- 20th century -- Exhibitions
- African American photographers -- History -- 20th century
- African American physicians -- United States -- History -- 20th century
- African American poets -- 20th century
- African American poets -- 20th century -- Biography
- African American police -- Georgia -- 20th century -- Fiction
- African American politicians -- 20th century
- African American quilts -- History -- 20th century -- Themes, motives
- African American sailors -- History -- 20th century
- African American sailors -- History -- 20th century -- Juvenile literature
- African American sculptors -- 20th century -- Exhibitions
- African American soldiers -- History -- 20th century
- African American soldiers -- History -- 20th century
- African American soldiers -- History -- 20th century -- Comic books, strips, etc
- African American soldiers -- History -- 20th century -- Fiction
- African American soldiers -- History -- 20th century -- Juvenile literature
- African American sportswriters -- History -- 20th century
- African American student movements -- Mississippi -- History -- 20th century
- African American student movements -- Mississippi -- History -- 20th century -- Juvenile literature
- African American students -- Alabama -- History -- Birmingham | 20th century
- African American students -- Arkansas | Little Rock -- History -- 20th century
- African American students -- Political activity -- Alabama | Birmingham -- History -- 20th century -- Juvenile literature
- African American teachers -- Political activity -- Alabama | Selma -- History -- 20th century -- Juvenile literature
- African American teenage boys -- Civil rights | History -- 20th century
- African American theater -- 20th century
- African American theater -- History -- 20th century
- African American theater -- New York (State) | New York -- History -- 20th century
- African American theater -- New York (State) | New York -- History -- 20th century -- Comic books, strips, etc
- African American veterans -- Social conditions -- 20th century
- African American veterans -- Social conditions -- 20th century
- African American women -- Civil rights | History -- 20th century
- African American women -- France | Paris -- History -- 20th century
- African American women -- France | Paris -- History -- 20th century
- African American women -- History -- 20th century
- African American women -- Housing | History -- 20th century
- African American women -- Political activity | History -- 20th century
- African American women -- Social conditions -- 20th century
- African American women -- Societies and clubs | History -- 20th century
- African American women artists -- New York (State) | New York -- 20th century | 21st century -- Exhibitions
- African American women artists -- New York (State) | New York -- History -- 20th century
- African American women artists -- Political activity -- New York (State) | New York -- History -- 20th century
- African American women authors -- 20th century -- Biography
- African American women civil rights workers -- History -- 20th century -- Biography
- African American women entertainers -- Political activity | History -- 20th century
- African American women novelists -- 20th century -- Biography
- African American women novelists -- 20th century -- Family relationships
- African American women pacifists -- History -- 20th century
- African American women poets -- 20th century -- Biography
- African American women political activists -- History -- 20th century
- African American women singers -- Political activity | History -- 20th century
- African American young women -- Social conditions -- 20th century
- African American young women -- Social conditions -- 20th century
- African American youth -- Alabama -- History -- Birmingham | 20th century
- African American youth -- Mississippi -- Social conditions -- 20th century
- African American youth -- Mississippi -- Social conditions -- 20th century
- African American youth -- Mississippi -- Social conditions -- 20th century -- Juvenile literature
- African American youth -- Political activity -- Alabama | Birmingham -- History -- 20th century -- Juvenile literature
- African American youth -- Political activity | History -- 20th century
- African Americans -- 20th century
- African Americans -- Alabama | Lowndes County -- Politics and government -- 20th century
- African Americans -- California | Los Angeles -- Social life and customs -- 20th century
- African Americans -- Civil rights -- 20th century
- African Americans -- Civil rights -- 20th century
- African Americans -- Civil rights -- 20th century -- Fiction
- African Americans -- Civil rights -- Alabama -- History -- 20th century
- African Americans -- Civil rights -- Alabama -- History -- 20th century
- African Americans -- Civil rights -- Alabama -- History -- Birmingham | 20th century
- African Americans -- Civil rights -- Alabama | Birmingham -- History -- 20th century
- African Americans -- Civil rights -- Alabama | Birmingham -- History -- 20th century -- Juvenile literature
- African Americans -- Civil rights -- Alabama | Lowndes County -- History -- 20th century
- African Americans -- Civil rights -- Alabama | Montgomery -- History -- 20th century
- African Americans -- Civil rights -- Alabama | Selma -- History -- 20th century
- African Americans -- Civil rights -- Alabama | Selma -- History -- 20th century -- Juvenile literature
- African Americans -- Civil rights -- Biography. -- 20th century
- African Americans -- Civil rights -- Georgia | Savannah -- History -- 20th century
- African Americans -- Civil rights -- Juvenile poetry -- 20th century
- African Americans -- Civil rights -- Juvenile poetry. -- 20th century
- African Americans -- Civil rights -- Mississippi -- History -- 20th century
- African Americans -- Civil rights -- Mississippi -- History -- 20th century
- African Americans -- Civil rights -- Mississippi | Greenwood -- History -- 20th century
- African Americans -- Civil rights -- Mississippi | Natchez -- History -- 20th century
- African Americans -- Civil rights -- Mississippi. -- 20th century
- African Americans -- Civil rights -- North Carolina -- History -- 20th century
- African Americans -- Civil rights -- North Carolina | Greensboro -- History -- 20th century
- African Americans -- Civil rights -- North Carolina | Monroe -- History -- 20th century
- African Americans -- Civil rights -- Northeastern States -- History -- 20th century
- African Americans -- Civil rights -- Southern States -- History -- 20th century
- African Americans -- Civil rights -- Southern States -- History -- 20th century -- Juvenile fiction
- African Americans -- Civil rights -- Southern States -- History -- 20th century -- Juvenile literature
- African Americans -- Civil rights -- Tennessee | Memphis -- History -- 20th century -- Pictorial works -- Catalogs
- African Americans -- Civil rights -- Texas | Houston -- History -- 20th century
- African Americans -- Civil rights -- United States -- History -- 20th century
- African Americans -- Civil rights -- United States -- History -- 20th century -- Juvenile literature
- African Americans -- Civil rights | History -- 20th century
- African Americans -- Civil rights | History -- 20th century
- African Americans -- Civil rights | History -- 20th century
- African Americans -- Civil rights | History -- 20th century -- Biography
- African Americans -- Civil rights | History -- 20th century -- Comic books, strips, etc
- African Americans -- Civil rights | History -- 20th century -- Drama
- African Americans -- Civil rights | History -- 20th century -- Juvenile fiction
- African Americans -- Civil rights | History -- 20th century -- Juvenile literature
- African Americans -- Civil rights | History -- 20th century -- Juvenile literature -- Alabama | Montgomery
- African Americans -- Civil rights | History -- 20th century -- Juvenile literature -- Mississippi
- African Americans -- Civil rights | History -- 20th century -- Juvenile poetry
- African Americans -- Civil rights | History -- 20th century -- Miscellanea
- African Americans -- Civil rights | History -- 20th century -- Pictorial works
- African Americans -- Civil rights | History -- 20th century -- Pictorial works -- Catalogs
- African Americans -- Civil rights | History -- 20th century -- Pictorial works | Exhibitions
- African Americans -- Civil rights | History -- 20th century -- Poetry
- African Americans -- Civil rights | History -- 20th century -- Sources
- African Americans -- Civil rights | Maryland -- Maryland | Prince George's County -- History -- 20th century
- African Americans -- Civil rights. -- Alabama | Montgomery -- History -- 20th century
- African Americans -- Crimes against -- Mississippi -- History -- 20th century
- African Americans -- Crimes against -- Mississippi -- History -- 20th century -- Juvenile literature
- African Americans -- Crimes against -- North Carolina | Oxford -- History -- 20th century
- African Americans -- Crimes against -- Southern States -- History -- 20th century
- African Americans -- Crimes against | History -- 20th century
- African Americans -- Economic conditions -- 20th century
- African Americans -- Education (Higher) | History -- 20th century
- African Americans -- Education -- Arkansas | Little Rock -- History -- 20th century
- African Americans -- Education -- Southern States -- History -- 20th century
- African Americans -- Employment -- Washington (D.C.) -- History -- 20th century
- African Americans -- Employment | History -- 20th century
- African Americans -- Florida -- Social conditions -- 20th century
- African Americans -- Florida | Rosewood -- History -- 20th century -- Drama
- African Americans -- Georgia -- Social conditions -- 20th century
- African Americans -- History -- 20th century
- African Americans -- History -- 20th century
- African Americans -- History -- 20th century -- Drama
- African Americans -- History -- 20th century -- Fiction
- African Americans -- History -- 20th century -- Juvenile fiction
- African Americans -- History -- 20th century -- Pictorial works -- Catalogs
- African Americans -- Housing | Government policy -- 20th century -- History
- African Americans -- Housing | History -- 20th century
- African Americans -- Illinois | Chicago -- History -- 20th century
- African Americans -- Illinois | Chicago -- History -- 20th century
- African Americans -- Illinois | Chicago -- Social conditions -- 20th century
- African Americans -- Illinois | Chicago -- Social life and customs -- 20th century
- African Americans -- Indiana | Marion -- Social conditions -- 20th century
- African Americans -- Intellectual life -- 20th century
- African Americans -- Intellectual life -- 20th century -- Exhibitions
- African Americans -- Intellectual life -- West (U.S.) -- 20th century
- African Americans -- Legal status, laws, etc. -- 20th century
- African Americans -- Legal status, laws, etc. -- 20th century -- Juvenile literature
- African Americans -- Legal status, laws, etc. | History -- 20th century
- African Americans -- Maine | Bangor -- Social conditions -- 20th century
- African Americans -- Maryland | Baltimore -- Social conditions -- 20th century
- African Americans -- Michigan | Detroit -- 20th century -- Drama
- African Americans -- Michigan | Detroit -- History -- 20th century
- African Americans -- Migrations -- 20th century
- African Americans -- Migrations | History -- 20th century
- African Americans -- Migrations | History -- 20th century -- Fiction
- African Americans -- Migrations | History -- 20th century -- Juvenile literature
- African Americans -- Migrations | History -- 20th century -- Juvenile poetry
- African Americans -- Migrations | History -- Juvenile poetry. -- 20th century
- African Americans -- Migrations | History -- Pictorial works. -- 20th century
- African Americans -- Migrations | History | Pictorial works. -- 20th century
- African Americans -- Mississippi -- Social conditions -- 20th century
- African Americans -- Mississippi | Coahoma County -- Social life and customs -- 20th century
- African Americans -- Mississippi | Delta (Region) -- Social life and customs -- 20th century
- African Americans -- Mississippi | Philadelphia -- 20th century -- Pictorial works
- African Americans -- Music -- 20th century
- African Americans -- Music -- 20th century
- African Americans -- Music -- Political aspects | History -- 20th century
- African Americans -- New York (State) | New York -- History -- 20th century
- African Americans -- New York (State) | New York -- Intellectual life -- 20th century
- African Americans -- New York (State) | New York -- Politics and government -- 20th century
- African Americans -- New York (State) | New York -- Social life and customs -- 20th century
- African Americans -- New York (State) | Rochester -- Social conditions | History -- 20th century
- African Americans -- North Carolina -- 20th century
- African Americans -- Ohio | Cleveland -- Politics and government -- 20th century
- African Americans -- Oklahoma | Tulsa -- History -- 20th century
- African Americans -- Oklahoma | Tulsa -- History -- 20th century -- Juvenile literature
- African Americans -- Pennsylvania | Pittsburgh -- Social conditions -- 20th century
- African Americans -- Political activity | History -- 20th century
- African Americans -- Political activity | History -- 20th century
- African Americans -- Politics and government -- 20th century
- African Americans -- Politics and government -- 20th century -- Juvenile literature
- African Americans -- Press coverage | History -- 20th century
- African Americans -- Relations with Jews -- 20th century
- African Americans -- Segregation -- 20th century
- African Americans -- Segregation -- Alabama -- History -- 20th century
- African Americans -- Segregation -- Maryland | Baltimore -- History -- 20th century
- African Americans -- Segregation -- Mississippi -- History -- 20th century
- African Americans -- Segregation -- Mississippi -- History -- 20th century -- Juvenile literature
- African Americans -- Segregation -- Mississippi | Natchez -- History -- 20th century
- African Americans -- Segregation -- North Carolina | Greensboro -- History -- 20th century
- African Americans -- Segregation | History -- 20th century
- African Americans -- Segregation | History -- 20th century
- African Americans -- Segregation | History -- 20th century -- Juvenile literature
- African Americans -- Services for -- New York (State) | New York -- History -- 20th century
- African Americans -- Social conditions -- 20th century
- African Americans -- Social conditions -- 20th century
- African Americans -- Social conditions -- 20th century -- Fiction
- African Americans -- Social conditions -- 20th century -- Juvenile literature
- African Americans -- Social conditions | History -- 20th century
- African Americans -- Social life and customs -- 20th century
- African Americans -- Social life and customs -- 20th century -- Drama
- African Americans -- Social life and customs -- West (U.S.) -- 20th century
- African Americans -- Southern States -- History -- 20th century
- African Americans -- Southern States -- History -- 20th century -- Juvenile poetry
- African Americans -- Southern States -- History -- Juvenile poetry. -- 20th century
- African Americans -- Southern States -- Intellectual life -- 20th century
- African Americans -- Southern States -- Social conditions -- 20th century
- African Americans -- Sports | History -- 20th century
- African Americans -- Study and teaching (Higher) | History -- 20th century
- African Americans -- Suffrage -- Alabama | Selma -- History -- 20th century
- African Americans -- Suffrage -- Alabama | Selma -- History -- 20th century -- Juvenile literature
- African Americans -- Suffrage -- Mississippi -- History -- 20th century
- African Americans -- Suffrage | History -- 20th century
- African Americans -- Tennessee | Memphis -- History -- 20th century -- Pictorial works -- Catalogs
- African Americans -- Tennessee | Memphis -- Social conditions -- 20th century
- African Americans -- Tennessee | Memphis -- Social conditions -- 20th century -- Juvenile fiction
- African Americans -- Travel -- United States -- History -- 20th century
- African Americans -- Travel | History -- 20th century
- African Americans -- Travel | History -- 20th century -- Juvenile literature
- African Americans -- Violence against -- 20th century
- African Americans -- Violence against -- Oklahoma | Tulsa -- History -- 20th century
- African Americans -- Violence against -- Oklahoma | Tulsa -- History -- 20th century -- Cartoons and comics
- African Americans -- Violence against -- Oklahoma | Tulsa -- History -- 20th century -- Comic books, strips, etc
- African Americans -- Violence against -- Oklahoma | Tulsa -- History -- 20th century -- Fiction
- African Americans -- Violence against -- Oklahoma | Tulsa -- History -- 20th century -- Juvenile fiction
- African Americans -- Violence against -- Oklahoma | Tulsa -- History -- 20th century -- Juvenile literature
- African Americans -- Violence against -- South Carolina -- History -- 20th century
- African Americans -- Violence against | History -- 20th century
- African Americans -- Washington (D.C.) -- History -- 20th century
- African Americans -- Washington (D.C.) -- Social conditions -- 20th century
- African Americans -- West (U.S.) -- Intellectual life -- 20th century
- African Americans -- West (U.S.) -- Social life and customs -- 20th century
- African Americans and libraries -- Southern States -- History -- 20th century
- African Americans in motion pictures -- History -- 20th century
- African Americans in popular culture -- 20th century
- African Americans in the civil service -- Washington (D.C.) -- History -- 20th century
- African Americans in the performing arts -- 20th century -- Poetry
- African Americans in the performing arts -- New York (State) | New York -- History -- 20th century
- African diaspora -- History -- 20th century
- African literature -- 20th century -- History and criticism
- African poetry -- 20th century -- Translations into English
- Afro-American Baptists -- Southern States -- History -- 20th century
- Agitprop theater -- China -- History -- 20th century
- Agricultural laborers -- Labor unions -- United States -- History -- 20th century
- Agricultural laborers -- Supply and demand -- Maine -- 20th century
- Agriculture -- Ohio -- History -- 20th century
- Agriculture -- Social aspects -- Great Plains -- History -- 20th century
- Air pilots, Military -- United States -- History -- 20th century
- Air power -- United States -- Philosophy | History -- 20th century
- Air warfare -- Government policy -- United States -- History -- 20th century
- Airborne troops -- History -- 20th century
- Aircraft accidents -- New Jersey -- History -- 20th century
- Airlift, Military -- Vietnam -- History -- 20th century
- Airlines -- History -- 20th century
- Airplanes -- Fuel consumption | Research -- United States -- History -- 20th century
- Airplanes -- Great Britain -- Ferrying | History -- 20th century
- Airplanes -- Great Britain -- Ferrying | History -- 20th century -- Juvenile literature
- Airships -- Germany -- History -- 20th century
- Airships -- History -- 20th century
- Ajax (Soccer team) -- History -- 20th century
- Ajax (Soccer team) -- History -- 20th century
- Alabama -- History -- 20th century
- Alabama -- History -- 20th century -- Fiction
- Alabama -- History -- 20th century -- Juvenile fiction
- Alabama -- Music -- 20th century -- History and criticism
- Alabama -- Race relations -- 20th century -- Juvenile fiction
- Alabama -- Race relations | History -- 20th century
- Alabama -- Race relations | History -- 20th century -- Fiction
- Alabama -- Rural conditions -- 20th century -- Juvenile literature
- Alaska -- History -- 20th century
- Alaska -- History -- 20th century -- Fiction
- Alaska -- History -- 20th century -- Fiction
- Alaska -- History -- 20th century -- Juvenile fiction
- Alaska -- Social life and customs -- 20th century
- Alcatraz Island (Calif) -- History -- 20th century -- Fiction
- Alcatraz Island (Calif) -- History -- 20th century -- Juvenile fiction
- Alcatraz Island (Calif.) -- History -- 20th century -- Fiction
- Alcatraz Island (Calif.) -- History -- 20th century -- Fiction
- Alcohol industry -- Accidents -- Massachusetts | Boston -- History -- 20th century
- Alcohol industry -- Accidents -- Massachusetts | Boston -- History -- 20th century -- Juvenile literature
- Alcoholic beverage industry -- United States -- History -- 20th century
- Alcoholic beverage industry -- United States -- History -- 20th century -- Juvenile literature
- Alcoholic beverage law violations -- United States -- History -- 20th century
- Alcoholic beverage law violations -- United States -- History -- 20th century -- Juvenile literature
- Alcoholics -- Family relationships -- Poetry -- 20th century
- Aleutian Islands (Alaska) -- History -- 20th century -- Juvenile literature
- Aleutian Islands (Alaska) -- History, Military -- 20th century -- Juvenile literature
- Aleutian Islands (Alaska) -- History, Naval -- 20th century -- Juvenile literature
- Algeria -- History -- 20th century -- Fiction
- Algeria -- Politics and government -- 20th century
- Algeria -- Politics and government -- 20th century
- Algeria -- Politics and government -- 20th century
- Algeria -- Social conditions -- 20th century
- Algeria -- Social conditions -- 20th century
- Algeria -- Social conditions -- 20th century
- Algeria -- Social conditions -- 20th century -- Drama
- Algeria -- Social conditions -- 20th century -- Fiction
- Algeria -- Social life and customs -- 20th century -- Fiction
- Algiers (Algeria) -- Politics and government -- 20th century
- Alliances -- History -- 20th century
- Alternative lifestyles -- Sweden -- History -- 20th century
- Alternative mass media -- United States -- History -- 20th century
- Alternative medicine -- United States -- History -- 20th century
- Alternative publications -- District of Columbia | Washington -- 20th century
- Alternative rock music -- United States -- History -- 20th century
- Amateur films -- Texas | Dallas -- History -- 20th century
- Ambassadors -- United States -- History -- 20th century
- Ambulance service -- Pennsylvania | Pittsburgh -- History -- 20th century
- American Dream -- 20th century -- Fiction
- American Poetry -- 20th century
- American authors -- 20th century -- Biography | Juvenile literature
- American drama -- 20th century
- American drama -- 20th century -- Bio-bibliography
- American drama -- 20th century -- History and criticism
- American drama -- 20th century -- History and critism
- American dramatists -- 20th century -- Biography
- American essays -- 20th century
- American essays -- 20th century
- American essays -- 20th century -- Periodicals
- American essays -- African American women authors -- 20th century
- American fiction -- 20th century
- American fiction -- 20th century
- American fiction -- 20th century -- Bibliography
- American fiction -- 20th century -- Bio-bibliography
- American fiction -- 20th century -- Bio-bibliography | Dictionaries
- American fiction -- 20th century -- Dictionaries
- American fiction -- 20th century -- Film adaptations
- American fiction -- 20th century -- Film and video adaptations
- American fiction -- 20th century -- History and criticism
- American fiction -- 20th century -- History and criticism
- American fiction -- 20th century -- History and criticism
- American fiction -- 20th century -- History and criticism -- Bibliography
- American literature -- 20th century
- American literature -- 20th century
- American literature -- 20th century
- American literature -- 20th century -- Bibliography
- American literature -- 20th century -- Bio-bibliography
- American literature -- 20th century -- Bio-bibliography -- Dictionaries
- American literature -- 20th century -- Bio-bibliography | Dictionaries
- American literature -- 20th century -- Book reviews | Periodicals
- American literature -- 20th century -- Dictionaries
- American literature -- 20th century -- History and criticism
- American literature -- 20th century -- History and criticism -- Bibliography
- American literature -- 20th century -- History and criticism -- Dictionaries
- American literature -- 20th century -- History and criticism -- Periodicals
- American literature -- 20th century -- History and criticism | Theory, etc
- American literature -- 20th century -- History and criticism | Theory, etc. -- Juvenile literature
- American literature -- 20th century -- Periodicals
- American literature -- History and criticism -- 20th century
- American literature -- Maine -- 20th century
- American music -- 20th century
- American newspapers -- History -- 20th century
- American newspapers -- Ownership | Political aspects | History -- 20th century
- American novelists -- 20th century -- Biography
- American poetry -- 20th century
- American poetry -- 20th century
- American poetry -- 20th century
- American poetry -- 20th century
- American poetry -- 20th century -- Bio-bibliography -- Dictionaries
- American poetry -- 20th century -- Bio-bibliography | Dictionaries
- American poetry -- 20th century -- Dictionaries
- American poetry -- 20th century -- History and criticism
- American poetry -- 20th century -- History and criticism -- Juvenile literature
- American poetry -- 20th century -- History and criticism | Theory, etc
- American poetry -- 20th century -- Periodicals
- American poetry -- 20th century -- Readings with music
- American poetry -- African American authors -- 20th century
- American poetry -- Women authors -- 20th century
- American poetry. -- 20th century
- American prose literature -- 20th century
- American prose literature -- 20th century -- Bio-bibliography | Dictionaries
- American prose literature -- 20th century -- History and criticism
- American prose literature -- 20th century -- History and criticism
- American wit and humor -- 20th century
- American wit and humor -- 20th century
- Americans -- England -- History -- 20th century
- Americans -- Europe -- History -- 20th century
- Americans -- France -- History -- 20th century
- Americans -- France | Paris -- History -- 20th century
- Americans -- France | Paris -- History -- 20th century
- Americans -- Italy -- History -- 20th century
- Americans -- Spain -- History -- 20th century
- Americans -- Spain -- History -- 20th century
- Americus (Ga.) -- Race relations | History -- 20th century
- Amphibious warfare -- History -- 20th century
- Amsterdam (Netherlands) -- History -- 20th century -- Fiction
- Amsterdam (Netherlands) -- Social conditions -- 20th century -- Fiction
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- Antique and classic cars -- History -- 20th century
- Antisemitism -- 20th century
- Antisemitism -- Europe -- History -- 20th century
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- Antisemitism -- France -- History -- 20th century
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- Antisemitism -- History -- 20th century
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- Apologetics -- 20th century
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- Architectural design -- History -- 20th century
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- Architecture -- United States -- 20th century -- Bibliography
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- Architecture -- United States -- 20th century -- Guidebooks
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- Architecture -- United States -- History -- 20th century -- Guidebooks
- Architecture -- United States -- History -- 20th century -- Pictorial works
- Architecture -- United States -- History -- 20th century. -- Architecture | United States -- History -- 20th century
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- Architecture, American -- 20th century -- Exhibitions
- Architecture, Chinese -- 20th century -- Exhibitions
- Architecture, Domestic -- France -- 20th century -- Exhibitions
- Architecture, Domestic -- France -- 20th century -- Exhibitions
- Architecture, Domestic -- Massachusetts -- History -- 20th century
- Architecture, Domestic -- Massachusetts -- History -- 20th century -- Guidebooks
- Architecture, German -- 20th century -- Exhibitions
- Architecture, Italian -- 20th century -- Exhibitions
- Architecture, Italian -- Exhibitions. -- 20th century
- Architecture, Modern -- 20th century
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- Architecture, Modern -- 20th century -- Catalogs
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- Architecture, Modern -- 20th century -- Themes, motives
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- Architecture, Postmodern -- 20th century
- Argentina -- History -- 20th century
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- Art -- Maine -- 20th century
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- Art, Modern -- 20th century -- Juvenile literature
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- Art, Modern -- 20th century -- South Africa
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- Art, Modern -- Exhibitions. -- 20th century
- Art, Modern -- Exhibitions. -- 20th century
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