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The All-American Canal under construction, Imperial County, California. This big earth ditch will open new territory for cultivation by bringing water for irrigation to deserts of southern California adjacent to the Imperial Valley. Sourced from the Library of Congress.

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The All-American Canal under construction, Imperial County, California. This big earth ditch will open new territory for cultivation by bringing water for irrigation to deserts of southern California adjacent to the Imperial Valley. Sourced from the Library of Congress.

More