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Magic Cyclovolute
John Allen to Peter Stephen Du Ponceau, 1819 March 9
Joseph Frieherr von Hammer-Purgstall to unknown, 1851 November 7
Admission of New Members
Proposals, by Abraham Small, no. 165, Chestnut Street, 2nd door below Fifth Street, Philadelphia, for publishing by subscription, Transactions of the American Philosophical Society, held at Philadelphia, for promoting useful knowledge.
Robert J. Oppenheimer, Number 2 of two sessions
On the Election of Thomas Jefferson as President of the American Philosophical Society
Conrad Louis Wirth to William J.Robbins 1956, November 16
Visiting the A. Irving Hallowell papers at the American Philosophical Society
R.H. Mathews to Frederick Fraley, 1897 May
Admission of New Members
Observations meteorologiques faites a Springmill, 1787-1800 ... Part II
Shaler, William to John Vaughan, Philadelphia, 1831 September 27
Robert J. Oppenheimer, Number 1 of two sessions
List of APS Objects Deposited at Metropolitan Museum of Art During the Second World War