Panorama. "Entered according to Act of Congress in the year 1853, by Thompson Ritchie, in the Clerk's Office of the District Court of the Eastern District of Penna." LC Panoramic maps (2nd ed.), 406.1 Available also through the Library of Congress Web site as a raster image. AACR2: 651/1; 700/1
Ritchie, Thompson; Strobel, Max; Queen, James
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