1Thomas Jefferson to Mark Langdon Hill, 5 April 1820 (Jefferson Papers)
Hill, Mark Langdon; and Missouri question [index entry]
2Mark Langdon Hill to Thomas Jefferson, 28 March 1820 (Jefferson Papers)
Hill, Mark Langdon; and Missouri question [index entry]
3Enclosure: John Holmes to the People of Maine, 10 April 1820 (Jefferson Papers)
Hill, Mark Langdon; and Missouri question [index entry]