- 1839 to 1839 538
- 1840 to 1841 1,025
- 1842 to 1843 1,026
- 1844 to 1845 794
- 1846 to 1847 782
- 1848 to 1849 895
- 1850 to 1851 1,010
- 1852 to 1853 1,003
- 1854 to 1854 907
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