- 19741
- 1975 to 19760
- 1977 to 19790
- 1980 to 19810
- 1982 to 19844
- 1985 to 19860
- 1987 to 19891
- 1990 to 19911
- 1992 to 19943
- 1995 to 19962
- 19971
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