- 18591,058
- 1860 to 18643,325
- 1865 to 18692,649
- 1870 to 18741,960
- 1875 to 18791,801
- 1880 to 18841,808
- 1885 to 18892,485
- 1890 to 18943,401
- 1895 to 18993,485
- 1900 to 19043,643
- 19052,492
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