11Enclosure: Alden Partridge’s Table of Altitudes of the Blue Ridge and Allegheny Mountains, [by 5 November 1810] (Jefferson Papers)
altitude; barometers used to calculate [index entry]
12Enclosure: Alden Partridge’s Observations on the Use of Barometers to Compute Altitudes, 20 August 1811 (Jefferson Papers)
altitude; barometers used to calculate [index entry]
13Enclosure: Alden Partridge’s Table of Altitudes of Northern Mountains, [before 6 September 1815] (Jefferson Papers)
altitude; barometers used to calculate [index entry]
14Enclosure: Summary of Meteorological Observations by Alden Partridge, [ca. 9 December 1815] (Jefferson Papers)
altitude; barometers used to calculate [index entry]