This early, large-scale, territorial map is from the office of William Pelham, the Surveyor General in Santa Fe, New Mexico. It includes all of today's Arizona and extends to include portions of eastern California, Colorado, and southern Utah to the north. The 1856 issue expands slightly on the first public surveys of 1855 with the addition of three small surveys completed east of Santa Fe. It locates numerous Indian villages and reservations with very limited detail outside of the towns along the Principal and Guide Meridians.

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Condition: B

Issued folding with light foxing mostly confined to the folds. The left margin has been trimmed close to the neatline, and there is a small chip with 2.25" of neatline missing.