- 1961 to 196410
- 1965 to 196932
- 1970 to 197436
- 1975 to 197998
- 1980 to 1984144
- 1985 to 198951
- 1990 to 199496
- 1995 to 1999108
- 2000 to 200116
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