- 1960 to 19641
- 1965 to 19698
- 1970 to 19748
- 1975 to 197929
- 1980 to 198434
- 1985 to 198939
- 1990 to 199426
- 1995 to 199922
- 2000 to 20026
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