"The Map will include that portion of North America, which lies between the Isthmus of Darien, and the 48th degree of North Latitude, and from the Mississippi River westwardly to the Pacific Ocean."
Shaw & Shoemaker, 45564.
Microopaque. New York, N.Y. : Readex Microprint, courtesy of A.A.S., 1980. 1 microopaque ; 23 x 15 cm. (Early American imprints. Second series ; no. 45564).