topic

• Mines and mineral resources2
• Geology1
• Iron mines and mining1
• Outcrops (Geology)1
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name

• Ashburner, Charles A. (Charles Albert), 1854-18891
• Bien, Julius, 1826-19091
• Billin, Chas. E1
• Colton, J. H. (Joseph Hutchins), 1800-18931
• Geological Survey of Pennsylvania1
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collection

• Maps of North America3

place

• Huntingdon County1
• Huntingdon County (Pa.)1
• Marquette County1
• Marquette County (Mich.)1
• Michigan1
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genre

• Geological maps2
• Topographic maps1

publisher

• Geological Survey of New Jersey1
• Geological Survey of Pennsylvania1
• Western Land Agency1

division

type

• cartographic3