1Alden Partridge to Thomas Jefferson, 9 January 1818 (Jefferson Papers)
Partridge, Alden; and calculation of altitude [index entry]
2Alden Partridge to Thomas Jefferson, 20 February 1818 (Jefferson Papers)
Partridge, Alden; and calculation of altitude [index entry]
3Enclosure: Alden Partridge’s Notes on Altitudes of Mountains, 20 August 1817 (Jefferson Papers)
Partridge, Alden; and calculation of altitude [index entry]