- 1960 to 196412
- 1965 to 196927
- 1970 to 197433
- 1975 to 197934
- 1980 to 198431
- 1985 to 198923
- 1990 to 199446
- 1995 to 199932
- 2000 to 200460
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