- 1928 to 19291
- 1930 to 19310
- 1932 to 19330
- 1934 to 19350
- 1936 to 19370
- 1938 to 19390
- 1940 to 19410
- 1942 to 19432
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