- 1816 : Newspaper clipping: Charges for Medicines and Medical Services, The Virginia Herald, September 11, 1816
- 1820 : Fredericksburg Circuit Court Records, Carmichael vs. Harrison, 1825 : Letter from Burr Harrison to Beverley R. Wellford, June 18, 1820
- 1825 : Fredericksburg Circuit Court Records, Carmichael vs. Harrison, 1825 : Beverley R. Wellford Affidavit, January 21, 1825