- 1980 to 19812
- 1982 to 19840
- 1985 to 19860
- 1987 to 19898
- 1990 to 19911
- 1992 to 19940
- 1995 to 199620
- 1997 to 199934
- 2000 to 20014
- 200212
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