21Thomas Jefferson to Patrick Gibson, 29 September 1815 (Jefferson Papers)
Post Office, U.S.; and mail service [index entry]
22Horatio G. Spafford to Thomas Jefferson, 6 April 1815 (Jefferson Papers)
Post Office, U.S.; and mail service [index entry]
23Thomas Jefferson to John Barnes, 29 December 1814 (Jefferson Papers)
Post Office, U.S.; and mail service [index entry]