The Doylestown Historical Society (Bucks County, Pennsylvania) began in 1995 as a committee of the Doylestown Revitalization Board, established by Borough Council to focus on historic preservation. In 2002 it was incorporated as an independent historical society. The Historical Society's archival holdings, located in the Holloway Research Center, date from 1819 to the present and span over 215 linear feet of materials. They include materials such as minutes, ledgers, correspondence, photographs, ephemera, scrapbooks, genealogy records, maps, and blueprints that document local individuals, families, businesses, organizations, and events. Of special interest is the William Edgar Geil papers, 1886-2013 (bulk 1900-1910), which document the once-renowned evangelical missionary and explorer from Doylestown who was most likely the first individual to travel the entire Great Wall of China.