Incoming Resources
- The helicopter, Keith Carey
- Helicopters, by Mary Lindeen
- Helicopters, by Jeffrey Zuehlke
- Attack helicopters, the AH-64 Apaches, by Bill Sweetman
- The Usborne Book of Planes and Helicopters, Clive Gifford, Designed by Steve Page, Illustrated by Mark Franklin, Additional illustrations by Sean Wilkinson
- Straight up;, the story of vertical flight
- Apache helicopters, by Denny Von Finn
- Helicopters, by Cari Meister
- All about helicopters, All about boats and ships
- Cavalry of the sky;, the story of U. S. Marine combat helicopters
- Amazing agricultural aircraft, Timothy R. Gaffney
- The helicopters, by Warren R. Young and the editors of Time-Life Books