Results for "African Americans -- Washington (D.C.)"
Joseph Henry Notebook, Weather, post-1863
- Date: post-1863
- Creator: Henry, Joseph 1797-1878
- Creator: Henry, Joseph 1797-1878
Sketch of "Telegraph" Joseph Henry Showed his Classes at the Albany Academy
- Date: 1857
- Creator: Henry, Joseph 1797-1878
- Creator: Henry, Joseph 1797-1878
Joseph Henry's Letter to Alexander Bache (July 30, 1864)
- Date: July 30, 1864 Civil War, 1861-1865
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
Reconstruction of Joseph Henry's Original Oscillating Electromagnet Motor
- Date: c. 1830s
- Creator: Unknown
- Creator: Unknown
Notes on the Operation of Telegraph Lines
- Date: c. 1850
- Creator: Vail, Alfred
- Creator: Vail, Alfred
Joseph Henry Publishes "Atmospheric Electricity"
- Date: 1859
Joseph Henry's Letter to Charles Francis McCay (August 25, 1846)
- Date: August 25, 1846
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
Joseph Henry's Letter to James Rodney (March 25, 1846)
- Date: March 25, 1846
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
Joseph Henry's Letter to William Brooke O'Shaughnessy (October 30, 1843)
- Date: October 30, 1843
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
- Creator: Henry, Joseph 1797-1878,Joseph Henry Papers Project
Lewis R. Gibbes's Letter to Joseph Henry (June 30, 1845)
- Date: June 30, 1845
- Creator: Gibbes, Lewis R,Joseph Henry Papers Project
- Creator: Gibbes, Lewis R,Joseph Henry Papers Project
Smithsonian Replica of Joseph Henry's Princeton Oscillating Electromagnet Motor
- Date: c. 1830s
- Creator: Unknown
- Creator: Unknown
Bern Dibner Awarded Smithson Society Gold Medal
- Date: 1976
- Creator: Unknown
- Creator: Unknown
