- 1863 to 1864417
- 1865 to 1869644
- 1870 to 1874629
- 1875 to 1879561
- 1880 to 1884434
- 1885 to 1889120
- 1890 to 189489
- 1895 to 189981
- 1900 to 1904126
- 190578
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