- 19766,007
- 1977 to 19798,336
- 1980 to 19813,541
- 1982 to 19844,510
- 1985 to 19865,091
- 1987 to 19894,651
- 1990 to 19911,944
- 1992 to 19943,752
- 1995 to 19963,455
- 1997 to 19993,008
- 2000 to 20011,575
- 2002455
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