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1820 Warner Pocket Map of the United States


United States of America Corrected and Improved from the Best Authorities
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Price: $1,750.00
Title:    United States of America Corrected and Improved from the Best Authorities

Description:    An exceptional and uncommon 1820 map of the United States issued by Benjamin Warner. Following closely after John Melish's superb wall map of 1819, this is one of the earliest maps to depict the United States extending from Atlantic to Pacific. As Wheat notes this map is significant as one of several issued up to about 1823 that galvanized geographic ideas regarding the only tenuously explored lands beyond the Rocky Mountains, including the mythical 'River of the West' or 'Buenaventura' and other speculations.

Following the 1819 Ames-Onis Treaty (on the map identified as the Florida Treaty), this map is among the earliest to include Florida as part of the United States. The treaty also established the Mexican-American border shown here extending from the Pacific at 42 degrees North the along the Arkansas River to 100 degrees West, then along the Red River to the Sabin River and the Gulf of Mexico. The lands to the north of this division, collectively identified as the Missouri Territory, are surprisingly well mapped for the period, giving evidence to the work of Louis and Clark with numerous references to their voyages present throughout - including the point 3000 miles from the Mississippi where expedition's canoes could no longer proceed. The Arkansas Territory, also established as an indirect result of the Ames-Onis Treaty is shown here at its ephemeral fullest, extending westward as far as the Mexico (Texas) border. The Territorial capital is here identified simply as 'Post' (Arkansas Post), Little Rock, further up the Arkansas River, would not be founded until 1821.

Perhaps the map's most compelling geography lies in the Mexican territory that would eventually become California, Utah, Nevada, Arizona and New Mexico. Stretching westward from the Rocky Mountains to the Pacific, this region had then been only occasionally penetrated and was, as the map suggests, largely 'Unexplored Country'. The Great Salt Lake appears in embryonic form with only its northwestern borders mapped. It is labeled Valle Salado, a term translating to 'Salt Valley' dating to the Escalante Expedition of 1776. The apocryphal Buenaventura River is shown passing from the San Francisco Bay easily through the California Coastal Ranges and terminating suggestively close to Great Salt Lake, before continuing again from the top of the lake and heading northwest into the Rocky Mountains. Of the Sierra Nevada range there is no suggestion. In Texas there is good detail for the period, much of which is drawn from Humboldt and Pike. The delineation of the Rio Del Norte, Rio Bravo, or as it is now known the Rio Grande, is exceptionally bold.

There seems to be only one state but several editions of this map, including one issued for William Guthrie's Geography. The present original color example appears to have been separately issued as a folding pocket map on onionskin style paper.


Date:    1820 (dated)

References:    Wheat, Carl Irving, Mapping of the Transmississippi West, 1540-1861, 340. Phillips (America) p. 881. Arkway, Cat 57.

Cartographer:    Benjamin Warner (fl. c. 1800 - 1830) was an American bookseller and publisher based in Philadelphia during the first half of the 19th century. Waner was a Pennsylvania Quaker who partnered with Jacob Johnson, a bookseller, printer, and inkmaker to produce numerous imprints. He maintained a location at 147 High Street (147 Market St) Philadelphia, as well as shops in Richmond, Virginia and Charleston, South Carolina. His apprentices included John Grigg, later known for medical imprints. Click here for a list of rare maps by Benjamin Warner.

Cartographer:    Hugh Anderson (c. 1790 - 1854, fl. 1811 - 1854) was an American line and stipple engraver based in Philadelphia, PA. Anderson was not specifically a cartographic engraver and his corpus includes landscape views, allegorical images, frontispieces, architectural, anatomical, and animal engravings, as well as maps. His name appears in Philadelphia directories from 1811 to 1819 and again from 1822 to 1824. Anderson was most likely Scottish and probably trained in Scotland before immigrating to the United States. There is some suggestion that Anderson was also a watchmaker and that he relocated to Ohio, where he may have continued his business and even engaged in politics under the Democratic Party. His apprentices may have included John Hugh Williams of Iowa (his son in law) and Genin Sylvester of Ohio. Click here for a list of rare maps by Hugh Anderson.

Size:   Printed area measures 25 x 16.25 inches (63.5 x 41.275 centimeters)

Scale:    1: 7603200

Condition:    Good. Backed with archival tissue for stability. Some creasing throughout including old printing creases near title. Light soiling. Original binder absent.

Code:   UnitedStates-warner-1820 (to order by phone call: 646-320-8650)

Tags:    Warner , Ames-Onis Treaty , Great Salt Lake , Buenaventura River , Anderson

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