topic

• Real property4
• Coal mines and mining3
• Coal leases2
• Geology2
• Landowners2
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name

• Hart, Lane S4
• Ashburner, Charles A. (Charles Albert), 1854-18893
• Geological Survey of New Jersey3
• Geological Survey of Pennsylvania3
• Lesley, J. P. (J. Peter), 1819-19033
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collection

• Maps of North America18

place

• Pennsylvania15
• Fairmount Park (Philadelphia, Pa.)3
• Philadelphia Region (Pa.)3
• Allegheny (Venango County : Township)2
• Allegheny (Venango County, Pa. : Township)2
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genre

• Maps18
• Geological maps3
• Cadastral maps2
• Charts1
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publisher

• publisher not identified4
• Fairmount Park Commission?2
• Geological Survey of Pennsylvania2
• Benj. Smith Lyman1
• Board of Commissioners for the Second Geological Survey1
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division

• Map Division18

type