- 1958 to 19592
- 1960 to 19641
- 1965 to 19696
- 1970 to 197414
- 1975 to 197916
- 1980 to 198416
- 1985 to 19899
- 1990 to 199421
- 1995 to 199912
- 200013
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