1. Commission of Ferris Jacobs as Brigade Surgeon in the service of the United States Collection: Images from the Rare Book and Manuscript Collections Location: Washington, District of Columbia, United States Date: 1862-04-04 Format: Image Creator: Lincoln, Abraham (American president, 1809-1865)
2. Diploma of Ferris Jacobs, M.D., from Columbian College Collection: Images from the Rare Book and Manuscript Collections Location: Washington, District of Columbia, United States Date: 1830-03-30 Format: Image Creator: George Washington University (American repository, Washington, contemporary), ...
3. Certificate of membership in the Medical Society of Washington D.C. Collection: Images from the Rare Book and Manuscript Collections Location: Washington, District of Columbia, United States Date: 1830-03-11 Format: Image Creator: Medical Society of the District of Columbia