topic

• Anthracite coal2
• Anthracite coal industry2
• Coal mines and mining1
• Statistics1

name

• Geological Survey of Pennsylvania2
• Hart, Lane S2
• Julius Bien & Co2
• Lesley, J. P. (J. Peter), 1819-19032
• More Less

collection

• Maps of North America2

place

• Pennsylvania2

genre

• Maps2
• Statistics1

publisher

division

• Map Division2

type

• cartographic2