- 18611,809
- 1862 to 18642,380
- 1865 to 18662,121
- 1867 to 18691,906
- 1870 to 18711,297
- 1872 to 18741,585
- 1875 to 18761,353
- 1877 to 18791,312
- 1880 to 18811,266
- 1882 to 18841,392
- 18851,119
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