1Alden Partridge to Thomas Jefferson, 20 February 1818 (Jefferson Papers)
In examining—a few days ago— the Calculations of the heights I last sent you , I found I had a...
2Alden Partridge to Thomas Jefferson, 9 January 1818 (Jefferson Papers)
I take the liberty to enclose you a number of Altitudes , which I calculated in the month of...
3Enclosure: Alden Partridge’s Notes on Altitudes of Mountains, 20 August 1817 (Jefferson Papers)
feet Altitude of Ascutney Mountain above the Sea 3320— Altitude of the same above Connecticutt...