Terrific map of the US, extending well west of the Rocky Mountains, intended to illustrate the Free, Slave and Border States during the Civil War. An excellent Transmississippi West map, showing a massive Dakota, no Idaho, newly formed Colorado and all of Utah (with Arizona still below according to the Baylor Line) and Washington extending to the Rocky Mountains, wrapping around Oregon (not shown). Terrific topographical detail throughout, with roads, rivers, lakes, mountains, forts, Indian info, etc. An excellent map of the period.
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