- 1992 to 19939
- 1994 to 19956
- 1996 to 199710
- 1998 to 199922
- 2000 to 20019
- 2002 to 20034
- 2004 to 20050
- 2006 to 20071
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