Scarce large format map of th United States, by David Burr, one of the most important American Map makers of the first part of the 19th Century.
The map depicts the mail collection districts in the US, using red lines to indicate district boundaries and yellow lines to distinguish states and territories. Arizona and New Mexico are shown as one territory, Nebraska includes the present states of the Dakotas and Wyoming, West Virginia has not separated from Virginia, Utah spans from California to Kansas, and Washington and Oregon extend to the Continental Divide. Indian Territory is unnamed. Burr was Geographer and Draftsman to the Senate from 1855 to 1859.