Simonetti, M. L., Kent, D. H., & Whipkey, H. E. (1976). Descriptive list of the map collection in the Pennsylvania State Archives: Catalogue of maps in the principal map collection (MG 11). Harrisburg: Commonwealth of Pennsylvania, Pennsylvania Historical and Museum Commission.
Chicago Style CitationSimonetti, Martha L., Donald H. Kent, and Harry E. Whipkey. Descriptive List of the Map Collection in the Pennsylvania State Archives: Catalogue of Maps in the Principal Map Collection (MG 11). Harrisburg: Commonwealth of Pennsylvania, Pennsylvania Historical and Museum Commission, 1976.
MLA CitationSimonetti, Martha L., Donald H. Kent, and Harry E. Whipkey. Descriptive List of the Map Collection in the Pennsylvania State Archives: Catalogue of Maps in the Principal Map Collection (MG 11). Harrisburg: Commonwealth of Pennsylvania, Pennsylvania Historical and Museum Commission, 1976.