- 1975 to 197612
- 1977 to 197916
- 1980 to 198114
- 1982 to 198412
- 1985 to 198623
- 1987 to 198930
- 1990 to 199121
- 1992 to 199418
- 1995 to 199622
- 1997 to 199938
- 2000 to 200118
- 20025
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