- 1965 to 19691
- 1970 to 19741
- 1975 to 197921
- 1980 to 19841
- 1985 to 198964
- 1990 to 199421
- 1995 to 199947
- 2000 to 200213
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