Commonwealth of Pennsylvania, Pennsylvania Historical and Museum Commission,
Pennsylvania Historical and Museum Commission. Division of Archives and Manuscripts.
Pennsylvania Historical and Museum Commission. Division of Archives and Manuscripts.
Simonetti, Martha L.
Kent, Donald H.
Whipkey, Harry E.
Pennsylvania Historical and Museum Commission.
Harrisburg, Penn. : Commonwealth of Pennsylvania, Pennsylvania Historical and Museum Commission, 1976.
Descriptive list of the map collection in the Pennsylvania State Archives : catalogue of maps in the principal map collection (MG 11)
Descriptive list of the map collection in the Pennsylvania State Archives : catalogue of maps in the principal map collection (MG 11)
Descriptive list of the map collection in the Pennsylvania State Archives : catalogue of maps in the principal map collection (MG 11)
Descriptive list of the map collection in the Pennsylvania State Archives :
Pennsylvania Historical and Museum Commission. Division of Archives and Manuscripts.