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.

This is a collection of letters, letterbooks, account books, scrapbooks, etc., concerning the families of Robert Hare and Thomas Willing. The letters and other documents include early family material, as well as documents written by numerous family relations, and some obviously only collected by them. The Willing family letters (1744-1901) are diverse, concerning family matters, business, society, comments on the Civil War, etc. There are numerous letters from Thomas Willing, many concerning his banking career, as President of the Bank of North America and later at the first Bank of the U.S. The Hare family letters (1724-1965) are more extensive and diverse, including much on travel in the U.S. and elsewhere. There is a letter from Robert Hare Jr. concerning steam engines, and letters from Horace Binney Hare concerning his education at Harvard, 1860, his trip to San Francisco and the west, 1862, and numerous letters written while a soldier in the Civil War. There are many letters from Horace Binney (1780-1875, DAB) to his daughter Esther, who was married to John Innes Clark Hare (1816-1905, DAB), concerning family travel and court cases. There are also letters from outside the family, such as those from Dorothea L. Dix. The bound volumes include, among others: Robert Hare letterbooks (1824-1825, 1841-1857), estate records, and laboratory expense accounts (1818-1860); G. H. Hare's journal or log of cruises aboard the U.S. United States (1841) and U.S. Flint (1845); Horace Binney Hare's 1862 journal of his trip to San Francisco. There are account books and accounts (1754-1795) kept by Thomas Willing; accounts of the controversy over the estate of John Innes Clark; and records of the First Colored Wesley Methodist Church of Philadelphia (receipt book, 1820-1848; minute book, 1827-1844). There are also Philadelphia court records, and minutes of the Common Council of the city, 1832.

From the Board of Trustees of the Estate of Stephen Girard, these films are the complete archive of one of the largest mercantile and financial operations in the United States of his day. The collection includes correpondence, with translations of letters in French (139 reels). It also includes bank records, account books, ledgers, cash books, and journals; papers, documents, and records of trading voyages (arranged by vessel and date); records of Girard's country house, "The Place"; records of real estate, rents, etc.; prices current of ports of the world. There is a card index of correspondents and ships (14 reels). Included is a card file, a unique and invaluable research tool, this is an index of names and places and alphabetical abstracts of Philadelphia newspaper items and advertisements for the period covering ca. 1718-1795. Roach made a systematic search through eighteenth-century newspapers and several other sources, for biographical and subject information on Philadelphians and Pennsylvanians of the period. It is primarily biographical , but subject headings, such as "The Barracks," "Blue Lion, Sign of the," "Custom House," are scattered throughout. The source of each entry is cited, and there are brief annotations. There is also a miscellaneous assortment of volumes that were received with the Kane family papers.