Editing Alexander Dallas Bache (section)

===U.S. Coast Survey===
In 1843, on the death of Professor [[Ferdinand Rudolph Hassler]], Bache was appointed superintendent of the [[United States Coast and Geodetic Survey|United States Coast Survey]].{{sfnp|''EB''|1878}} Whereas Hassler had faced continual doubts from Congress, Bache succeeded in convincing legislators of the value of [[geodesy]] in addition to [[geomagnetic]] and meteorological research.{{sfnp|''EB''|1878}} With many contacts, friends, and family among the nation's political and military leaders, Bache won liberal appropriations to build up his agency and greatly expand its work. By the mid 1850s it had become the federal government's leading scientific bureau. In 1849, it began study of the Pacific Coast, which the US had newly acquired via the [[US-Mexico War]] and [[Oregon Treaty]]. Assisted by [[Isaac Stevens]], his number two in Washington, DC, Bache reorganized the Coast Survey so that it could complete initial mapping of the entire US coast.<ref>James Tejani, ''A Machine to Move Ocean and Earth: The Making of the Port of Los Angeles—and America'' (New York, 2024) {{ISBN|978-1-324-09355-8}}, pp. 21–25, 70-79.</ref>