St. Johns Signal Tower Gas Station
 The St. Johns Signal Tower Gas Station located in North Portland Oregon is listed on the National Register of Historic Places. It was built and opened in 1939 as a gas station for the Signal Oil Company. It was in operation as a gas station until 1984 but changed brand from Signal Gas to Hellman's Golden Eagle Gas Station in 1954 and in turn became a Chevron station in 1965.