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Map of passes in the Sierra Nevada from Walker's Pass to the Coast Rangefrom explorations and surveyscartographic materialby Williamson, R. S. (Robert Stockton), 1824-1882
Published 1853 -
Map no 1 from the western boundary of Missouri to the mouth of Trap Creek from explorations and surveyscartographic materialPublished 1855
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Map no 4 from the valley of the mud lakes to the Pacific Ocean [Calif]from explorations and surveys made under the direction of the Hon Jefferson Davis Secretary of Warcartographic materialPublished 1855