A Map of the State of Pennsylvania (Reading Howell, 1792; the facsimile of 1896)

Reading Howell’s map of the state, published at Philadelphia in 1792 and shown here in the facsimile printed for the Pennsylvania Archives in 1896: Pennsylvania from Lake Erie and the Ohio line to the Delaware, with its counties and townships, the Depreciation and Donation lands of the northwest, the district lines of the late surveys, the roads, mills, forges and towns of the new state, and the edges of New York, New Jersey, Delaware, Maryland, Ohio and Virginia. Howell compiled it from the Land Office surveys and the state’s own surveys of its boundaries and rivers. Its Explanation keys “An Indian Path” (a fine dotted line) and “An Indian town” (a small tent): Kuskusky, a Moravian town on the Beaver, Logs Town, Conemaugh, Frankstown and Obeals (Cornplanter’s town) on the Allegheny, and paths of the Lenape (Delaware), Shawnee, Seneca and other Haudenosaunee nations across the north and west — the Snow Shoe path from the West Branch to the Bald Eagle’s Nest, the “Portage 23 Miles” between the Canoe Places of the Allegheny and the Sinnemahoning, the Kittanning path toward Frankstown, the Sheshequin path over Burnet’s Hills, and shorter paths to the Lick on the Elk Lick Branch and to the Salt Spring. Not shown: the copyright notice, the title, the dedication, the Explanation, the mounting strip and cloth seam between the four pieces of the sheet, and the margins.

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Source

MapA map of the State of Pennsylvania [1792; facsimile printed for the Pennsylvania Archives, Harrisburg, 1896]
AuthorReading Howell, 1792
ArchiveLibrary of Congress
RightsPublic domain. Published 1792; this copy is the facsimile printed for the Pennsylvania Archives in 1896 — both before 1931, so public domain in the United States. Evidence
AccuracyAbout 5 km (RMS 1.3 km at 51 control points). Placed by hand in a map-queue session and approved by a person. If something sits in the wrong place, members can fix it with Fix placement on the map.
MethodPlaced by hand: a thin-plate spline, held loosely (smoothing 1.0), through 51 places read from the scan and matched to their positions today — the state’s corners and the crossings of its lines by the Ohio, the Mahoning, the Delaware, the Susquehanna and the Tioga; the Erie Triangle corner, Le Boeuf and Meadville; the forks of the Ohio and the mouths of the Youghiogheny, Kiskiminetas, Beaver, French Creek and Conewango; the Canoe Places of the West Branch and the Sinnemahoning; the mouths of the Juniata, Kettle, Tunkhannock and Wyalusing creeks; and towns from Washington and Union Town to Easton, Trenton and Wilmington. Compiled from the Land Office surveys, the map is drawn closely: left out of the fit in turn, half the places fall within 1.5 km of where it puts them (RMS 1.9 km; the worst, the Delaware at the New York line and the mouth of the Monocacy at Bethlehem, about 4 km). The half-degree graticule, reckoned from Philadelphia, agrees with the places only to about 5 km, so it is not used. The sheet is mounted in four pieces; the joins shift the drawing by up to 0.7 km, within the fit. The copyright notice, title, dedication, Explanation, mounting strip, cloth seam and margins are masked. See the methodology.
Version1.0.0, updated 2026-10-18
CoversPennsylvania, New York, New Jersey, Delaware, Maryland, Ohio, West Virginia

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Changelog

  • 1.0.0 (2026-10-18): First release: placed by hand at 51 places. From the Library of Congress, Geography and Map Division (80693000): the facsimile printed for the Pennsylvania Archives in 1896; added for Project Homeland.

Credits

  • From the Library of Congress, Geography and Map Division (80693000): the facsimile printed for the Pennsylvania Archives in 1896; added for Project Homeland
  • Georeferencing: Native Routes
  • Scan: Library of Congress

Control points

The full list of control points with residuals is in control-points.geojson. Historic names indexed for search: names.geojson.

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