Joseph Henry and Spencer Fullerton Baird Aid Pacific Railroad Surveys
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Date: April 1853
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Smithsonian Secretary Henry and Assistant Secretary Spencer Fullerton Baird provide detailed scientific instructions and equipment for the Pacific Railroad surveys, conducted from 1853 to 1855. These surveys consist of six major expeditions extending from the Great Plains to the west coast with the purpose of determining a transcontinental railroad route. The specimens collected during these surveys became a significant part of the Smithsonian's collections and contained many new species.
Chronology of Smithsonian History
Institutional History Division, Smithsonian Institution Archives, 600 Maryland Avenue, SW, Washington, D.C. 20024-2520, SIHistory@si.edu
April 1853
Great Plains