- 1940 to 19444
- 1945 to 194916
- 1950 to 19544
- 1955 to 19595
- 1960 to 196412
- 1965 to 196936
- 1970 to 197415
- 1975 to 19791
- 1980 to 198415
- 19851
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