- 1968 to 19692
- 1970 to 19742
- 1975 to 19795
- 1980 to 19840
- 1985 to 19893
- 1990 to 19940
- 1995 to 19994
- 2000 to 200212
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