- 1970 to 19741
- 1975 to 19791
- 1980 to 19841
- 1985 to 19892
- 1990 to 19942
- 1995 to 19991
- 2000 to 20041
- 2005 to 20091
- 2010 to 20131
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