Marvelous map of North America, published In London by Hinton, Simpkin & Marshall.
The map includes a double wide Arkansas Territory, massive Missouri Territory extending to the Rocky Mountains, wonderful early Russian Territory with a still primitive coastline, etc.
Oregon is New Albion. The Columbia River is shown in nice early detail.
New California is a Mexican possession. Nice detail in Texas, which is yet to become a Republic.
Excellent detail up the Rio Colorado. The continuous Rio Sacramento extends tentatively to the Great Salt Lake (Teguayo). Very nice detail along the Rockies.