Western Pennsylvania Maps

What's online?

Maps from various collections that focus on the geographic representation of Western Pennsylvania, which include geodetic and topographic survey maps, flood commission maps, property ownership maps, and many others.

What's in the entire collection?

Maps selected for scanning and representation online were culled from the following:

City of Pittsburgh Geodetic and Topographic Survey Maps, 1923-1961

  • Contains 171 plates prepared by the City of Pittsburgh Department of Planning staff.

Darlington Digital Library Maps

  • Of the hundreds of maps in this collection, over 70 of them were created in the mid-18th through early-20th centuries and depict Pittsburgh or Allegheny County, including maps of Fort Pitt, plans of Pittsburgh, maps of Pittsburgh and Allegheny cities, Bird's-eye maps of Carnegie, Duquesne, Glassport, Homestead, and other western Pennsylvania cities.

Flood Commission of Pittsburgh, Pennsylvania, 1912

  • Contains 14 plates produced as part of the Report of the Flood Commission.

G. M. Hopkins Company Maps, 1872-1940

  • Contains 46 volumes (1,820 plates) that show lot and block numbers, dimensions, street widths, names of property owners, churches, cemeteries, mills, schools, roads, railroads, lakes, ponds, rivers, and streams. Plates within each volume can be browsed; some plates are searchable by street name.

Warrantee Atlas of Allegheny County, Pennsylvania, 1914

  • Contains 49 plates that depict the original land grants that settlers of present-day Allegheny County received from the Commonwealth after William Penn and his descendants vested the land to the legislature.
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