- 1956 to 19591
- 1960 to 19640
- 1965 to 19691
- 1970 to 19740
- 1975 to 19790
- 1980 to 19847
- 1985 to 19895
- 1990 to 19940
- 1995 to 19994
- 20002
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