Hand-colored engraved map of the world by Thomas Gamaliel Bradford, in the scarce 1846 variant (reading "Corrected to 1846." below the image.)
As the map was published in 1846, it features Texas as an entity separate from the United States or Mexico, with Houston and San Felipe de Austin prominently displayed.
Hints of Antarctic coastline are slowly filling in.
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.