- 18441
- 1845 to 18491
- 1850 to 18541
- 1855 to 18593
- 1860 to 18642
- 1865 to 18692
- 1870 to 18742
- 1875 to 18792
- 1880 to 18811
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