- 1920 to 19241
- 1925 to 19291
- 1930 to 19340
- 1935 to 19391
- 1940 to 19447
- 1945 to 194944
- 1950 to 195420
- 1955 to 195930
- 1960 to 19643
- 1965 to 19693
- 1970 to 19741
- 1975 to 19791
- 1980 to 198444
- 1985137
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