Assembled from several repositories between 1975-1978, this collection of documents, publications, letters, historical and genealogical data pertains to Betsy Ross, the American flag, and the Betsy Ross House in Philadelphia.

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.