(1972). See your American heritage on the Pennsylvania trail of history [cartographic material]: A guide map to Pennsylvania historic properties administered by Pennsylvania Historical and Museum Commission, Harrisburg, Pennsylvania. [Harrisburg]: The Commission.
Chicago Style CitationSee Your American Heritage On the Pennsylvania Trail of History [cartographic Material]: A Guide Map to Pennsylvania Historic Properties Administered By Pennsylvania Historical and Museum Commission, Harrisburg, Pennsylvania. [Harrisburg]: The Commission, 1972.
MLA CitationSee Your American Heritage On the Pennsylvania Trail of History [cartographic Material]: A Guide Map to Pennsylvania Historic Properties Administered By Pennsylvania Historical and Museum Commission, Harrisburg, Pennsylvania. [Harrisburg]: The Commission, 1972.