- 1940 to 19441
- 1945 to 19497
- 1950 to 195432
- 1955 to 19599
- 1960 to 196412
- 1965 to 196926
- 1970 to 19740
- 1975 to 19790
- 1980 to 19840
- 1985 to 198813
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