- 1920 to 19249
- 1925 to 19290
- 1930 to 19344
- 1935 to 19391
- 1940 to 19441
- 1945 to 19490
- 1950 to 19540
- 1955 to 19572
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