- 1925 to 19292
- 1930 to 19340
- 1935 to 19397
- 1940 to 19446
- 1945 to 19490
- 1950 to 19540
- 1955 to 19590
- 1960 to 19640
- 1965 to 19690
- 1970 to 19741
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