This account book contains receipts and expenditures for the Flying Camp (1783), and business accounts for purchases of bread and candles, and for expenses of traveling and lodging (1785-1800).

This volume includes messages and proclamations of governors of the province, a petition to the King from the province of Georgia [n.d.], the draft of an address of the University of the State of Pennsylvania to George Washington (1781), a letter from Arthur Lee to Alexander Wedderburn (1774), letters of Timothy Matlack to Abiel Holmes (1819), and George Wythe's draft resolutions (1775).

This collection contains minutes of the Society, 1781-1975; minutes of the directors of the Corporation, 1929-1947; membership book (with signatures of early members), 1785; and names of later members. There are also deeds to the meeting house and burying ground; treasurers' accounts; reports of officers and committees; bills and receipts for constructing, maintaining, and repairing the meeting house; cancelled checks; and letters to the Society and its officers, especially Samuel Wetherill, 1883-1884.