The Tinicum Township Historical Society in Delaware County, Pennsylvania was organized in 1986 to collect, maintain, interpret, and make available items of historic importance to the township and the community. The Society's archival holdings comprise about 25 linear feet of materials dating from 1791 to 2013, including photographs, architectural drawings, maps, ephemera, newspaper clippings, and photocopies of primary- and secondary-source documents focusing on local history topics. The Society also holds about 20 linear feet of records from a township commissioner, 1982-2007.