Author
Geological Survey (U.S.)
3
Philadelphia & Reading Railroad Co
3
Cate, Addison S.
2
DeLorme Mapping Company
2
G.M. Hopkins & Co
2
George F. Cram Company
2
Historical Society of Pennsylvania
2
Lorenz, William
2
Mario Zucca Illustration
2
Melish, John, 1771-1822
2
Miller, Ruby M.
2
Pennsylvania Bureau of Maps
2
Pennsylvania Bureau of Topographic and Geologic Survey
2
Pennsylvania Dept. of Commerce
2
Pennsylvania Dept. of Conservation and Natural Resources
2
Pennsylvania Historical and Museum Commission
2
Pennsylvania Historical and Museum Commission Division of Archives and Manuscripts
2
Rand McNally and Company
2
Simonetti, Martha L.
2
Zucca, Mario
2
Andre, John, Major
1
Bien, Joseph R.
1
Bohner, Mary Beth, 1950-
1
Broom, Jacob
1
Brunner, Burtie
1
Brunner, Harry
1
Bryson, Kristin K.
1
Busch, Edward
1
Charles D. Hevenor Company
1
Colton, G. Woolworth 1827-1901
1
Cuff, David J.
1
Duportail, Antoine-Jean-Louis Le Bègue de Presle, 1743-1802
1
Eavenson, Howard N. 1873-1953
1
Faill, Rodger T.
1
Fay, T. V.
1
G.W. Colton and C.B. and Company
1
Geological Survey of Pennsylvania
1
George F. Cram Co
1
Gray, Ormando Willis
1
Henry family
1
Henry, Matthew Schropp 1790-1862
1
Henry, William 1729-1786
1
Hopkins Griffith Morgan & Co.,
1
Hopkins, G. M. & Co
1
Hopkins, H. W. 1838-1920
1
Hughes, James C.
1
Jones, Thomas H. 1912-
1
Kent, Donald H.
1
Kimber & Conrad and Johnson & Warner
1
Koelble, Susan S.
1
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