John Milner Associates, Philadelphia, PA, for the Pennsylvania Historic Resource Survey, Bureau for Historic Preservation, PA Historical & Museum Commission.survey conducted April 1986 ; building built 1894
John Milner Associates, Philadelphia, PA, for the Pennsylvania Historic Resource Survey, Bureau for Historic Preservation, PA Historical & Museum Commission.survey conducted April 1986 ; building built circa 1820 / circa 1922
John Milner Associates, Philadelphia, PA, for the Pennsylvania Historic Resource Survey, Bureau for Historic Preservation, PA Historical & Museum Commission.survey conducted April 1986 ; period of building 1850-1874