Nice example Bradford's map of the United States, covering the United States from Coast to Coast on the eve of the Independence of Texas.
The map shows a massive Oregon Territory, along with a number of Indian Districts (Huron, Sioux, Mandan, Osage and Ozark).
The massive mythical rivers of the west are shown, traversing Upper California, without regard to the several mountain ranges which would later appear in these regions.
Thomas Gamaliel Bradford (1802-1887) was an American geographic publisher. He hailed from Bradford, Massachusetts and began his publishing career by working for the America Encyclopedia. Then, he edited and republished the Atlas Designed to Illustrate the Abridgement of Universal Geography, Modern & Ancient, which had originally been offered in French by Adrian Balbi. In 1835, he published another atlas, A Comprehensive Atlas: Geographical, Historical & Commercial, and, in 1838, An Illustrated Atlas Geographical, Statistical and Historical of the United States and Adjacent Countries. His interests were primarily in educational publishing and he was one of the first mapmakers to show Texas as an independent country.