1Alden Partridge to Thomas Jefferson, 6 September 1815 (Jefferson Papers)
American Philosophical Society; Transactions [index entry]
2Enclosure: Alden Partridge’s Table of Altitudes of Northern Mountains, [before 6 September 1815] (Jefferson Papers)
American Philosophical Society; Transactions [index entry]
3Enclosure: Alden Partridge’s Table of Altitudes of the Blue Ridge and Allegheny Mountains, [by 5 November 1810] (Jefferson Papers)
American Philosophical Society; Transactions [index entry]