- 1877 to 18791,347
- 1880 to 18811,303
- 1882 to 18841,431
- 1885 to 18861,275
- 1887 to 18892,248
- 1890 to 18913,135
- 1892 to 18942,739
- 1895 to 18962,733
- 1897 to 18993,261
- 19002,933
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