Philadelphia: Lippincott Grambo & Co., 1851. 1st edition (Clark III, 434; Graff 4687; New Howes W-487). iv,  - 216,  pp. Publisher catalogue last 20 pages. Fold-out map [24-3/4" x 29-1/2"] at rear, entitled "A New Map of the United States (© 1851), upon which are Delineated its Vast Works of Internal Communication, Routes across the Continent &c. Showing also Canada and the Island of Cuba." Map hand-colored in outline. Scale: ~ 65 mi = 1". 4 insets, including one depicting California & Oregon. 12mo. 5-9/16" x 3-1/2". Original publisher's wallet-style purple leather binding, with gilt title stamping to one side. Leather faded to dark tan. Old paper repair to top of rear hinge. Map with some age-toning along the two center horizontal fold-lines. Overall, a respectable VG+ copy. Item #36812
While Howes categorizes this work as a derivative of Williams' earlier Appleton publication(s), the author, in his prefatory "To the Public", goes to great pains to reassure the reader this a new work, in which an "entirely new plan has been adopted.", a stance to which Clark & Graff agree. Further, research suggests, this the first Williams' publication to address California.
This 1851 map not recorded by Wheat, TRANSMISSIPPI, though see entry 769 for the 1852 version. Wheat tells us the map "is largely based on Fremont but which carries much up-to-date information ...".
Somewhat uncommon on the commercial market, with last copy to auction in 1999.