- 1823 to 1829 40
- 1830 to 1839 387
- 1840 to 1849 1,246
- 1850 to 1859 595
- 1860 to 1869 1,026
- 1870 to 1879 1,293
- 1880 to 1889 625
- 1890 to 1899 81
- 1900 to 1909 81
- 1910 to 1919 90
- 1920 to 1929 0
- 1930 to 1939 0
- 1940 to 1949 0
- 1950 to 1954 1
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
