Thomas Balch Library 208 W Market St, Leesburg, VA20176 Thomas Balch Library is a special collections library focused on history and genealogy. In 1922 the library was…More founded as a private library. Currently, it is owned by the town of Leesburg. Its collection focuses on Loudoun County, regional history, Virginia history, genealogy, military history and ethnic history. Some of its resources include archives and manuscripts, cemetery records, census records, deeds and wills, genealogies and family files, historic house files, maps, microforms, military collection, newspapers, online subscriptions, oral histories, printed collections, tax rolls, vertical files, visual collections and vital records.