Incoming Resources
- Koch Digitaldisc, Vienna, Austria, p1988
- Vienna Modern Masters, Vienna, Austria, ℗1991
- Vienna Modern Masters, Vienna, Austria, ℗1993
- Vienna Modern Masters, Vienna, Austria, ℗1998
- Document Records, Vienna, Austria, 1990?
- Forest History Society, IUFRO Forest History Group, Durham, N.C., Vienna, Austria, c1992