topic

name

• Geological Survey of Pennsylvania3
• Hart, Lane S3
• Lesley, J. P. (J. Peter), 1819-19033
• White, I. C. (Israel Charles), 1848-19273

collection

• Maps of North America3

place

• Pennsylvania3
• Allegheny County1
• Allegheny County (Pa.)1
• Beaver County1
• Beaver County (Pa.)1
• More Less

genre

• Maps3

publisher

division

• Map Division3

type

• cartographic3