This map is an early effort at determining the practicality of getting water from the Colorado River to the Los Angles basin. Under the direction of Brig. Gen. A.A. Humphreys, 1st Lieut. Eric Bergland's route is here detailed as he explored a portion of the lower Colorado. The party's route appears to lead from Los Angeles east and north across southern California to the river, north to Store's Ferry, then south to Ehernberg. The inward route took them from Ehernberg west across the Coachella Valley, past San Bernardino and back to their starting point. The coast of Southern California is well mapped up to Santa Monica. Along the route is much detail with many places and features named. The reality of bringing water from the Colorado River was finally realized more than 65 years later with the completion of the Colorado River Aqueduct in 1941. The map shows the early towns of Southern California including Anaheim, San Pedro, Wilmington, and El Monte. The detailed topography is shown with hachure. This map is a great example of stone lithograph with the fine texture of the stone clearly visible.

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Condition: A

Issued folding, now pressed and backed with archival tissue. Some light fold toning, still very good.