- 1957 to 19591
- 1960 to 19640
- 1965 to 19690
- 1970 to 19746
- 1975 to 19796
- 1980 to 19849
- 1985 to 198963
- 1990 to 199430
- 1995 to 199912
- 2000 to 200328
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