A New Map of Texas, Oregon, and California, with the Regions Adjoining. Samuel Augustus Mitchell (1792-1868). Philadelphia: S. Augustus Mitchell, 1846. - Accompaniment to Mitchell's New Map of Texas, Oregon, and California, with the Regions Adjoining. Philadelphia: S. Augustus Mitchell, 1846. Single sheet (22 x 20 ½ inches). Folding lithographic map with original full hand coloring, tipped in after the "Accompaniment…" (strengthened on verso, a bit stained). Original green leather binding, lettered in gilt within an elaborate embossed border in the center of the front cover (extremities a bit rubbed, but a FINE copy). Provenance: penciled ownership inscription of Jacob Warner, from Cincinnati, Ohio, on front free-end paper. The first edition, and A FINE COPY of one of Mitchell's most popular and important map. As noted in the "Accompaniment…", Texas has recently been gathered into the bosom of the United States, and California is in limbo, "Upper California. This part of Mexico was declared independent in 1845. It has of late attracted much attention in the United States: a number of Americans are already settled in it, and many others are preparing to emigrate thither…" Regarding Oregon, the "Accompaniment…" declares that "the United States have an indubitable claim to the whole region of Oregon, from N. lat 42o to 54o 40', yet the government has several times proposed, from motives of accommodation, to adopt the 49th parallel of latitude as the dividing line…". Wheat describes the map: "In the Upper California portion, Fremont is carefully followed, while further north Wilkes is followed. The boundary (to be) with Mexico is imperfectly shown but Texas appears with the magnified boundaries, including Santa Fe, of the 1844 Emory. The various claims to Oregon appear. The "Accompaniment…" is of particular interest, containing perhaps the clearest statement of Oregon and California facts that came out the period just prior to settlement of the former's boundaries and inclusion of the latter in the United States." Cowan p.433; Graff 2841; Howes M685; Sabin 49714; Wheat Transmississippi 520; Wheat Gold Rush 29.