- 1977 to 197910
- 1980 to 19811
- 1982 to 19847
- 1985 to 19866
- 1987 to 19893
- 1990 to 199124
- 1992 to 199431
- 1995 to 199628
- 1997 to 199925
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