[U.S.P.R.R. Exp. & Surveys. Cal.] Geological sections of the Bernadino Pass explored by Lieut. R. S. Williamson corps topl. Engrs. In 1853 prepared in the office of Pacific Rail Road exploration and survey war department by William P. Blake
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Beinecke Rare Book and Manuscript Library > [U.S.P.R.R. Exp. & Surveys. Cal.] Geological sections of the Bernadino Pass explored by Lieut. R. S. Williamson corps topl. Engrs. In 1853 prepared in the office of Pacific Rail Road exploration and survey war department by William P. Blake
Titles: Sections 10 & 11 Plate VII. Section Bernadino Pass from East to West along the trail from San Bernadino to the Colorado Desert [and] Section Bernadino Pass from North to South.