Interesting map of North America, shortly before Texas Independence. Includes Russian Ameirca, 54-40 or Fight border with British America and nice detail in Upper California and Texas. The Rocky Mountains are based on Humboldt. A number of Indian Tribes shown in the West, along with a region called Pay inconnu (unknown country) Rio Sacramento links Lake Timpanagos (Salt Lake) to San Francisco Bay. The Columbia River, Lewis River and Missouri River dominate the Northwestern watershed.