One of the best large format maps of Mexico, Texas and Upper California to appear in a commercial atlas in the 1840s.
Texas is clearly delineated in it Republic format, with dozens of place names shown, a well as the road from Natchtoches to the Loredo area. Substantial detail throughout the Rocky Mountains, incorporating Humboldt, Pike and Long. The west reflects the cartography which predates Fremont's explorations, including two Salt Lakes and the mythical rivers which connect them to the Pacific, including the R. Buenaventura and the R. Millers, which has its terminus in SF Bay. Lots of Indian Tribes and place names throughout. This 1842 Lapie rarely appears on the market. An excellent Republic and Southwest map.