topic

• Geology175
• Mines and mineral resources25
• Railroads13
• Discovery and exploration11
• Explorations and surveys11
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name

• Julius Bien & Co38
• Geological Survey of New Jersey24
• Lesley, J. P. (J. Peter), 1819-190319
• Geological Survey of Pennsylvania17
• Hart, Lane S16
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collection

• Maps of North America129
• Maps of New York City and State37
• Atlases of the United States23
• Atlases, gazetteers, guidebooks and other books2

place

• New York (State)37
• New Jersey33
• Pennsylvania21
• California17
• Michigan15
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genre

• Maps191
• Geological maps94
• Geological cross-sections24
• Atlases23
• Diagrams13
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publisher

• Julius Bien & Co.,22
• publisher not identified21
• Geological Survey of Pennsylvania10
• Geological Survey of New Jersey9
• War Dept., U.S. Pacific Rail Road Explorations & Surveys9
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division

type

• cartographic190
• still image9
• text1