- 1970 to 19742
- 1975 to 19792
- 1980 to 19842
- 1985 to 19893
- 1990 to 19943
- 1995 to 19992
- 2000 to 20042
- 2005 to 20092
- 2010 to 20132
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