- 1957 to 19591
- 1960 to 19640
- 1965 to 19690
- 1970 to 19740
- 1975 to 19790
- 1980 to 19843
- 1985 to 19892
- 1990 to 19940
- 1995 to 19981
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