All Carnegie Library of Pittsburgh locations will close at 5 pm on Wednesday, November 26 and will remain closed on Thursday, November 27.
Pennsylvania Topographical Map Finding Aid
The Carnegie Library of Pittsburgh maintains a collection of United States topographical maps (primarily 1:24,000) as well as
topographical maps of some foreign locations. The library’s maps were published by the United States Geological Survey,
the Defense Mapping Agency and/or the Pennsylvania Geological Survey over the past century. Library staff and volunteers
have created an inventory and finding aid for the Pennsylvania topographic maps. For further information concerning these
maps, or to make a research request to view a map, please see or contact a librarian (412 622-3175) in Reference Services on
the second floor of Main Library.
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; all plates are searchable by street name. (University of Pittsburgh Digital Library)
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. An index to plates and names is available. (University of Pittsburgh Digital Library)
Pittsburgh Mapping and Historical Site Viewer
The Pittsburgh Mapping and Historical Site Viewer provides a window into the past, allowing anyone to see how the city of 22,433 people in 1835 changed over time and how the neighborhoods grew and expanded.
- Sanborn Digital Fire Insurance Maps 1867-1970 - Pennsylvania
This is a subscription database accessible from within the library or remotely with a Carnegie Library of Pittsburgh library card.
Sanborn fire insurance maps are the most frequently consulted maps in both public and academic libraries. Sanborn maps are valuable historical tools for urban specialists, social historians, architects, geographers, genealogists, local historians, planners, environmentalists and anyone who wants to learn about the history, growth, and development of American cities, towns, and neighborhoods.
- Sanborn Fire Insurance Maps - Penn State University Libraries
Penn State provides open access to 33,000 scanned Pennsylvania Sanborn Fire Insurance Maps through 1922. These Sanborn Maps were in the public domain and were copied by Penn State. Please note that these digital records are protected by copyright, and are the property of Penn State University.