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Map, Pennsylvania, Pocket Map, Antique, Colton, New York, 1878


G.W. & C.B. Colton & Co.
Colton’s New Township Map of the State of Pennsylvania
New York: 1878
Hand-colored engraving
16.5 x 27.5 inches, overall
5.75 x 3.75 inches, folded into cloth covers as issued

Folding pocket map of Pennsylvania showing the townships, counties, county seats, villages, railroads, canals and cities of the state. Raised topography and rivers depicted throughout. Hand-colored in tones of green, pink, and yellow, with red outline within the usual decorative vine border associated with Colton maps. Inside front cover has advertisements for other cartography products by Colton & Co. Outer cover embossed with raised decoration, with title in gold.

Product description continues below.


Between 1831 and 1890, the Colton firm dominated American map publishing and their atlases were the finest produced in the U.S. during the 19th century. The company was founded by Joseph Hutchins Colton (1800-1893), who had no formal training in geography or cartography; he began by purchasing copyrights of maps prepared by other individuals or companies, and his principal role was to manage the production and distribution of the maps. His first maps were drawn by the esteemed cartographer David H. Burr in the 1830s. By the 1850s Colton was also publishing guidebooks, atlases and immigrant and railroad maps. The firm was renamed G.W. & C.B. Colton in the 1860s when Colton was succeeded by his sons — George Woolworth Colton (1827-1901) and Charles B. Colton (c. 1831-1916). It is believed that George Colton compiled the company’s 1855 Atlas of the World and served thereafter as the firm’s principal map compiler, cartographer and engraver.

Joseph H. Colton sold his atlas plates to Alvin Jewett (A.J.) Johnson in 1860. Johnson, the publisher, is best known for his atlases, issued in many editions in the second half of the 19th century, beginning with the publication of Johnson’s New Illustrated (Steel Plate) Family Atlas. In 1898, the G.W. & C.B. Colton firm became Colton, Ohman & Co. and published under that name until about 1901, when August R. Ohman began publishing under his own name as “successor to the Coltons.”

Full publication information: G.W . & C.B. Colton & Co., 172 William Street, New York

Condition: Generally very good with the usual light overall toning, wear, soft creases, and minor separations at intersections of folds. Folded, as issued. Slight browning of the map where glued to covers. Covers very good with minor wear, fraying, soiling.


Cohen, Paul E. and Augustyn, Robert T. Manhattan in Maps: 1527-1995. New York: Rizzoli, 1997. p. 120.

Ristow, Walter W. American Maps & Mapmakers: Commercial Cartography in the 19th Century. Detroit, MI: Wayne State University Press, 1985. pp. 325, 327.

Additional information


19th Century