- 1950 to 19541
- 1955 to 19590
- 1960 to 19644
- 1965 to 196915
- 1970 to 197430
- 1975 to 197913
- 1980 to 19842
- 1985 to 19894
- 1990 to 19946
- 1995 to 199924
- 2000 to 200112
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