- 1917 to 19197
- 1920 to 19240
- 1925 to 19290
- 1930 to 19340
- 1935 to 19390
- 1940 to 194425
- 1945 to 19498
- 1950 to 19543
- 1955 to 19591
- 1960 to 19641
- 1965 to 19691
- 1970 to 19732
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