- 1984 to 19851
- 1986 to 19878
- 1988 to 19894
- 1990 to 19912
- 1992 to 19930
- 1994 to 199510
- 1996 to 199714
- 1998 to 19996
The preservation of the Duke University Libraries Digital Collections and the Duke Digital Repository programs are supported in part by the Lowell and Eileen Aptman Digital Preservation Fund