- 1977 to 19796
- 1980 to 19813
- 1982 to 19840
- 1985 to 19860
- 1987 to 19898
- 1990 to 19913
- 1992 to 19940
- 1995 to 19961
- 1997 to 19991
- 2000 to 20017
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