Results for "Smithsonian Institution. Assistant Secretary"
- SI History Bibliography
Joseph Henry: Inventor of the Telegraph?
- Date: 1999-2007
- Creator: Hochfelder, David 1965-
- Creator: Hochfelder, David 1965-
Joseph Henry Electromagnet
- Date: c. 1978
Electromagnet Made by Joseph Henry
- Date: 1978
- Creator: Unknown
- Creator: Unknown
- SI History Chronology
Joseph Henry Builds Electromagnet for Penfield & Taft Ironworks
- Date: June-July 1831
- SI History Chronology
Joseph Henry Builds Large Electromagnet for Bowdoin College
- Date: December 1831
Joseph Henry Constructs an Electric Motor
- Date: April-July 1831
Smithsonian Replica of Joseph Henry's Princeton Oscillating Electromagnet Motor
- Date: c. 1830s
- Creator: Unknown
- Creator: Unknown
Replica of Joseph Henry's Princeton Oscillating Electromagnet Motor
- Date: c. 1830s
- Creator: Unknown
- Creator: Unknown
- SI History Bibliography
"Looking Back: James H. Logan, First superintendent of the Western Pennsylvania School for the Deaf"
- Date: 1990
- Creator: Lang, Harry G
- Creator: Lang, Harry G
Joseph Henry Constructs Large Electromagnet for Yale College Professor Benjamin Silliman
- Date: January 15, 1831
