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United States Pacific Railroad Expeditions and Surveys

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Routes near the 41st Parallel. Map no. 3: from the Humboldt Mountains to the Mud Lakes, from Explorations and Surveys made under the direction of the Hon. Jefferson Davis Secretary of War
Routes near the 41st Parallel. Map no. 3: from the Humboldt Mountains to the Mud Lakes, from Explorations and Surveys made under the direction of the Hon. Jefferson Davis Secretary of War

Routes near the 41st Parallel. Map no. 4: from the Valley of the Mud Lakes to the Pacific Ocean; from Explorations and Surveys made under the direction of the Hon. Jefferson Davis Secretary of War
Routes near the 41st Parallel. Map no. 4: from the Valley of the Mud Lakes to the Pacific Ocean; from Explorations and Surveys made under the direction of the Hon. Jefferson Davis Secretary of War

Route near the 38th and 39th Parallels. Map no 1: from the western boundary of Missouri to the mouth of Trap Creek; from Explorations and Surveys made under the direction of the Hon. Jefferson Davis Secretary of War
Route near the 38th and 39th Parallels. Map no 1: from the western boundary of Missouri to the mouth of Trap Creek; from Explorations and Surveys made under the direction of the Hon. Jefferson Davis Secretary of War

Route near the 38th and 39th Parallels. Map no. 4: from the Coo-Che-To-Pa Pass to the Wahsatch Mountains; from Explorations and Surveys made under the direction of the Hon. Jefferson Davis Secretary of War
Route near the 38th and 39th Parallels. Map no. 4: from the Coo-Che-To-Pa Pass to the Wahsatch Mountains; from Explorations and Surveys made under the direction of the Hon. Jefferson Davis Secretary of War

General map of explorations and surveys in California made under the direction of the Hon. Jefferson Davis Secretary of War
General map of explorations and surveys in California made under the direction of the Hon. Jefferson Davis Secretary of War

Routes in California to connect with the routes near the 32nd and 35th parallels. Map and profile of the Canada de las Uvas; from Explorations and Surveys made under the direction of the Hon. Jefferson Davis Secretary of War
Routes in California to connect with the routes near the 32nd and 35th parallels. Map and profile of the Canada de las Uvas; from Explorations and Surveys made under the direction of the Hon. Jefferson Davis Secretary of War

Madelin Pass. June 19th at 2 P.M. view taken from Mount Observation.
Madelin Pass. June 19th at 2 P.M. view taken from Mount Observation.

Geologic Plan of the Coastal Range of California from San Francisco Bay to Los Angeles Along the Route Explored by Lt. John G. Parke . . .
Geologic Plan of the Coastal Range of California from San Francisco Bay to Los Angeles Along the Route Explored by Lt. John G. Parke . . .

Geological Map of a part of the State of California Explored in 1853 by Lieut. R. S. Williamson U. S. Top. Engr. Prepared to accompany the report of William P. Blake Geologist of the Expedition.
Geological Map of a part of the State of California Explored in 1853 by Lieut. R. S. Williamson U. S. Top. Engr. Prepared to accompany the report of William P. Blake Geologist of the Expedition.

Geological Sections of the Bernardino Pass explored by Lieut. R.S. Williamson, Corps Topl. Engrs. in 1853.
Geological Sections of the Bernardino Pass explored by Lieut. R.S. Williamson, Corps Topl. Engrs. in 1853.