- 1820 : Letter from Rob Scott, January 20, 1820
- 1823 : Letter from John Hipkins Bernard, June 2, 1823
- 1827 : Letter from Samuel Gordon, Jr., July 19, 1827
- 1936 : WPA Survey Report, Gaymont, research made by Selma Farmer, November 2, 1936
- 1937 : WPA Survey Report, Prospect Hill, research made by Selma Farmer, January 28, 1937