- 1940 to 19443
- 1945 to 194911
- 1950 to 19540
- 1955 to 19590
- 1960 to 19642
- 1965 to 19691
- 1970 to 19740
- 1975 to 19790
- 1980 to 19840
- 1985 to 19890
- 1990 to 19940
- 19952
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