- 1917 to 19191
- 1920 to 19240
- 1925 to 19290
- 1930 to 19340
- 1935 to 19390
- 1940 to 19441
- 1945 to 19494
- 1950 to 195427
- 1955 to 195932
- 1960 to 196421
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