- 1966 to 196782
- 1968 to 1969109
- 1970 to 197189
- 1972 to 1973104
- 1974 to 1975109
- 1976 to 1977142
- 1978 to 1979142
- 1980 to 1981157
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