Showing results 9457 - 9460 of 9460 for The Year in Pictures: As Seen from the National Museum of American History (Exhibition) (1986-circa 1992: Washington, D.C.)
Description: Joseph Henry,the first Smithsonian Secretary, served from 1846 to 1878 and was a physicist who conducted pioneering research in electromagnetism.
Showing results 9457 - 9460 of 9460 for The Year in Pictures: As Seen from the National Museum of American History (Exhibition) (1986-circa 1992: Washington, D.C.)