- 1980 to 19813
- 1982 to 19848
- 1985 to 19865
- 1987 to 198986
- 1990 to 199119
- 1992 to 19940
- 1995 to 199630
- 1997 to 199938
- 2000 to 200116
- 20022
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