1C. & A. Conrad & Company to Thomas Jefferson, 4 August 1809 (Jefferson Papers)
Conrad, John [index entry]
2C. & A. Conrad & Company to Thomas Jefferson, 13 November 1809 (Jefferson Papers)
Conrad, John [index entry]
3Thomas Cooper to Thomas Jefferson, 8 November 1813 (Jefferson Papers)
Conrad, John [index entry]
4Thomas Jefferson to Joseph Milligan, 21 July 1816 (Jefferson Papers)
Conrad, John [index entry]