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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 San Francisco Bay to the plains of Los Angelesfrom explorations and surveys made under the direction the Hon Jefferson Davis Secretary of Warcartographic materialPublished 1855