[Pennsylvania]: Hooper, Robert Lettis, Jr.:

$25,000 · Offered by William Reese Company

[MANUSCRIPT MAP OF NORTHWEST PENNSYLVANIA]. An intriguing, detailed, and very rare manuscript map of northwestern Pennsylvania, created by noted surveyor and soldier Robert Lettis Hooper, Jr. The map encompasses the present-day Pennsylvania counties of Erie, Crawford, Venango, Armstrong, Jefferson, and Clarion, a district that would later become famous due to its oil and gas deposits. In fact, "Oil Spring" and "Oil C[reek]" are shown in the northeast corner of the map. The scale of the map is fifteen miles to an inch, and covers the area from Presque Isle on Lake Erie (site of the present-day city of Erie) in the northwest to the region just to the north and east of Pittsburgh (which is not shown) in the southwest. The western branch of the Susquehanna is drawn in the southeast, and the area that is now encompassed by the Allegheny National Forest is in the northeast. The dominant feature of the map is the "Allegany River," shown snaking its way north and east to its headwaters. More than a dozen tributaries, rivers, and creeks branching off the Allegheny are shown and identified, as is the Buffalo Swamp and Fort "Wenango" (i.e. Venango). Two roads are indicated on the map in dotted lines, one showing the "road from Fort Pitt to Wenango" and the other, in the far northeast, marking the "Indian Path to Cayuga." Hooper notes that the fort at Presque Isle has been demolished, and identifies the ruins of another French fort. Along the run of the Allegheny where it branches northe

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