- 1910 to 191917
- 1920 to 192914
- 1930 to 193917
- 1940 to 194925
- 1950 to 195919
- 1960 to 19690
- 1970 to 19790
- 1980 to 19891
- 1990 to 19952
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