Results for "Smithsonian Institution. Assistant Secretary for Administration"
Secretary Abbot with Solar Equipment
- Creator: Unknown
- Creator: Unknown
Secretary Abbot with His Water Distiller
- Creator: Unknown
- Creator: Unknown
Secretary Charles G. Abbot with Solar Boiler
- Date: c. September 30, 1936
- Creator: Unknown
- Creator: Unknown
News Broadcast of Secretary Abbot's Solar Invention
- Date: c. September 30, 1936
- Creator: Tolman, Ruel P (Ruel Pardee) 1878-1954
- Creator: Tolman, Ruel P (Ruel Pardee) 1878-1954
Secretary Abbot Carrying the Radiometer up Mount Wilson
- Date: c. 1930?
- Creator: Unknown
- Creator: Unknown
Preparations for Solar Broadcast
- Date: September 30, 1936
- Creator: Tolman, Ruel P (Ruel Pardee) 1878-1954
- Creator: Tolman, Ruel P (Ruel Pardee) 1878-1954
Alfred Vail's Letter to Joseph Henry (July 17, 1846)
- Date: July 17, 1846
- Creator: Vail, Alfred,Joseph Henry Papers Project
- Creator: Vail, Alfred,Joseph Henry Papers Project
Morse Claims Henry's Work in Electromagnetism Did Not Contribute to Invention of Telegraph
- Date: July 19, 1854
Letter from Samuel Morse to Alfred Vail, January 15, 1857
- Date: January 15, 1857 19th century
- Creator: Morse, Samuel Finley Breese 1791-1872
- Creator: Morse, Samuel Finley Breese 1791-1872
Replica of Joseph Henry's Princeton Oscillating Electromagnet Motor
- Date: c. 1830s
- Creator: Unknown
- Creator: Unknown
Steam Tricycle in Front of North Entrance to SIB
- Date: 1888
- Creator: Unknown
- Creator: Unknown
Sec. Abbot and His Solar Powered Invention
- Date: September 30, 1936
- Creator: Tolman, Ruel P (Ruel Pardee) 1878-1954
- Creator: Tolman, Ruel P (Ruel Pardee) 1878-1954
