- 1918 to 19191
- 1920 to 19210
- 1922 to 19240
- 1925 to 19260
- 1927 to 19290
- 1930 to 19310
- 1932 to 19340
- 1935 to 19360
- 1937 to 19390
- 1940 to 19410
- 1942 to 19442
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