- 1941 to 194910
- 1950 to 195926
- 1960 to 196917
- 1970 to 197915
- 1980 to 19891
- 1990 to 19990
- 2000 to 20090
- 2010 to 20151
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