- 1980 to 19816
- 1982 to 19843
- 1985 to 198617
- 1987 to 198996
- 1990 to 199110
- 1992 to 19940
- 1995 to 199631
- 1997 to 199938
- 2000 to 20018
- 20023
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