The future Tax Collector for the Port of San
Francisco, James Collier, escorted by a party of Dragoons, took the most difficult path across Arizona. From Zuni, New Mexico over the Mogollon Rim, to the Pima Villages and on to Yuma they trudged on, up one mountain and down another.

William Brisbane, a young assistant to Collier, kept a detailed diary of his trip across that wilderness known as Arizona

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