Results for "African Americans -- Washington (D.C.)"
Dr. Richard E. Grant Examines Fossil in Lab
- Date: 1975
- Creator: Sandved, Kjell Bloch 1922-
- Creator: Sandved, Kjell Bloch 1922-
Electromagnet Made by Joseph Henry
- Date: 1978
- Creator: Unknown
- Creator: Unknown
Joseph Henry's Albany Magnet with its Battery and Apparatus for Measuring its Strength
- Date: 1831
- Creator: Unknown
- Creator: Unknown
Joseph Henry's Letter to John R. Henry (July 9, 1831)
- Date: July 9, 1831
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
Joseph Henry's Letter to Edward Hitchcock (January 27, 1832)
- Date: January 27, 1832
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
Joseph Henry's Letter to Parker Cleaveland (November 16, 1831)
- Date: November 16, 1831
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
Exhibition Records, 1920-2008
- Date: 1920 1920-2008
- Creator: National Museum of American History (U.S.) Division of Information Technology and Society
Museum Conservation Institute
- Date: December 9, 2006
- Creator: DeLoreto, James
- Creator: DeLoreto, James
Cary Instrument Maker Business Card
- Date: 1837
- Creator: Unknown,Joseph Henry Papers Project
- Creator: Unknown,Joseph Henry Papers Project
Sketch of Henry Magnet
- Date: 1857
- Creator: Henry, Joseph 1797-1878
- Creator: Henry, Joseph 1797-1878
Brian Mason
- Date: 1975
- Creator: Sandved, Kjell Bloch 1922-
- Creator: Sandved, Kjell Bloch 1922-
Joseph Henry's Albany Magnet
- Date: c. 1820s
- Creator: Unknown
- Creator: Unknown
