- 1962 to 196410
- 1965 to 19663
- 1967 to 19693
- 1970 to 19711
- 1972 to 19740
- 1975 to 19760
- 1977 to 19790
- 1980 to 19810
- 1982 to 198450
- 1985 to 198616
- 19871
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