- 1942 to 19441
- 1945 to 194921
- 1950 to 19540
- 1955 to 19590
- 1960 to 196484
- 1965 to 196987
- 1970 to 197410
- 1975 to 197910
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