Results for "African Americans -- Washington (D.C.)"
George Mifflin Dallas' Letter to Joseph Henry (August 6, 1847)
- Date: August 6, 1847
- Creator: Dallas, George Mifflin 1792-1864,Joseph Henry Papers Project
- Creator: Dallas, George Mifflin 1792-1864,Joseph Henry Papers Project
Joseph Henry's Letter to John Tyndall (November 6, 1872)
- Date: November 6, 1872
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
"How Modern Science Dates the Past" Exhibit
- Date: 1962
- Creator: Unknown
- Creator: Unknown
Exhibit, Museum of History and Technology
- Date: 1972
- Creator: Unknown
- Creator: Unknown
Joseph Henry's Letter to Louis Agassiz (November 12, 1872)
- Date: November 12, 1872
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
Robert M. Patterson's Letter to Joseph Henry (June 8, 1846)
- Date: June 8, 1846
- Creator: Patterson, Robert M (Robert Maskell) 1787-1854,Joseph Henry Papers Project
- Creator: Patterson, Robert M (Robert Maskell) 1787-1854,Joseph Henry Papers Project
Joseph Henry's Letter to Stephen Alexander (March 9, 1863)
- Date: March 9, 1863
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
Joseph Henry's Letter to Louis Agassiz (May 31, 1869)
- Date: May 31, 1869
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
Postcard of the Dome at the Mt. Wilson Observatory
- Date: 1938
- Creator: Curt Teich & Co
- Creator: Curt Teich & Co
Thomas Alva Edison
- Date: c. 1920s
- Creator: Unknown,Avino, Mark
- Creator: Unknown,Avino, Mark
Exhibition Brochure for "Einstein: A Centenary Exhibition"
- Date: 1979
- Creator: Unknown
- Creator: Unknown
John James Audubon
- Date: c. 1845
- Creator: Unknown
- Creator: Unknown
