After 1925
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Main Author:
Sisler, James D.
Title/Description:
Map of the Coal Fields of Pennsylvania
Publication Info:
[Harrisburg]: Commonwealth of Pennsylvania, Topographic and Geological Survey, 1929; Bulletin M-6 Part II Plate I
Date:
1929
Scale:
1:380,000
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Main Author:
U.S. Geological Survey
Title/Description:
Geologic Map and Sections of the McCalls Ferry and Quarryville Quadrangles, Pennsylvania
Publication Info:
Washington: Department of the Interior, U.S. Geological Survey, 1929; Bulletin 799 Plate 1
Date:
1929
Scale:
1:62,500
Original Source:
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Main Author:
Stose, George W. and O.J. Ljungstedt
Title/Description:
Geologic Map of Pennsylvania
Publication Info:
Harrisburg: Commonwealth of Pennsylvania, Topographic and Geologic Survey, 1931
Date:
1931
Scale:
1:380,160
Original Source:
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Main Author:
U.S. Geological Survey
Title/Description:
Geologic Map and Sections of the Quakertown and Doylestown Quadrangles, Pennsylvania-New Jersey
Publication Info:
Washington: Department of the Interior, U.S. Geological Survey, 1931; Bulletin 828 Plate 1
Date:
1931
Scale:
1:62,500
Original Source:
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Main Author:
U.S. Geological Survey
Title/Description:
Geological Map of the New Kensington Quadrangle, Pennsylvania
Publication Info:
Washington: Department of the Interior, U.S. Geological Survey, 1932; Bulletin 829, Plate I
Date:
1932
Scale:
1:62,500
Original Source:
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Main Author:
U.S. Geological Survey
Title/Description:
Map Showing Structure and Economic Geology of the New Kensington Quadrangle, Pennsylvania
Publication Info:
Washington: Department of the Interior, U.S. Geological Survey, 1932; Bulletin 829, Plate 2
Date:
1932
Scale:
1:62,500
Original Source:
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Main Author:
Bascom, F. and G.W. Stose
Title/Description:
Geologic Map and Structure Sections of the Honeybrook and Phoenixville Quadrangles, Pennsylvania
Publication Info:
Washington: Department of the Interior, US Geological Survey, 1938; Bulletin 891. Plate 1
Date:
1938
Scale:
1:62,500
Original Source:
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Main Author:
U.S. Geological Survey
Title/Description:
Geologic Map of the Pre-Cambrian and Lower Cambrian (Hardyston) Areas in the Delaware Water Gap and Easton Quadrangles, Pennsylvania
Publication Info:
Washington: Department of the Interior, US Geological Survey, 1940; Bulletin 920. Plate 5
Date:
1940
Scale:
1:62,500
Original Source:
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Main Author:
Department of Commerce
Title/Description:
Map of Pennsylvania Showing the State Highway System and Main Connecting Roads
Publication Info:
Harrisburg: Pennsylvania Department of Commerce, 1940
Date:
1940
Scale:
1:570,240
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Main Author:
The Pennsylvania State College
Title/Description:
Known Sources of Primary Wealth
Publication Info:
State College: School of Mineral industries, The Pennsylvania State College, 1948
Date:
1948
Scale:
1:650,000
Original Source:
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Main Author:
Jones, Thomas and Lillian Heeren
Title/Description:
Oil and Gas Fields of Pennsylvania
Publication Info:
Harrisburg: Pennsylvania Geological Survey, 1953
Date:
1953
Scale:
1:380,160
Original Source: