- 1972 to 19744
- 1975 to 19760
- 1977 to 19791
- 1980 to 19810
- 1982 to 19840
- 1985 to 19860
- 1987 to 198932
- 1990 to 199121
- 1992 to 19942
- 1995 to 199611
- 1997 to 199917
- 20006
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