This collection contains two volumes of David Rittenhouse's daily diaries. The first volume contains meteorological data for 1792. The second volume is more content rich and covers the period in 1785 during which he traveled west to determine the boundaries of Pennsylvania. These records include observations on the environment, daily expenses, and other travel-related recordings. There are also various sketches, calculations, and other notes in these volumes.
Presented by William Logan Fox, July 1, 1965 (tipped in, originally, in: David Rittenhouse. An Oration, Delivered... Before the American Philosophical Society... Philadelphia: Printed by John Dunlap, in Market-Street. 1775).
General physical description: 1 item
David Rittenhouse's receipt book. Receipts are primarily from John Hart, Treasurer of Bucks County, for payments such as militia fines, forfeited debts, supplies, monthly taxes, second-class tax, and excise taxes.; Significant number of blank pages, only a sample scanned.; American Philosophical Society
The Pennsylvania General Assembly orders that William McDowell be paid for part of the expenses of "fitting up the assembly Room."; American Philosophical Society
