Results for "Telegraph"

Notes on the Operation of Telegraph Lines

• Date: c. 1850
• Creator: Vail, Alfred
• Creator: Vail, Alfred

Alfred Vail's Electromagnetic Telegraph Notes

• Date: 1848
• Creator: Vail, Alfred
• Creator: Vail, Alfred

Drawing of the Electromagnetic Telegraph and Alpha Code

• Date: c. 1844
• Creator: Vail, Alfred
• Creator: Vail, Alfred

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

Diary of Alfred Vail, September 8 and 9, 1848 Entries

• Date: September 8-9, 1848
• Creator: Vail, Alfred
• Creator: Vail, Alfred

Letter from Samuel Morse and Alfred Vail to Joseph Henry, July 22, 1846

• Date: July 22, 1846 19th century
• Creator: Morse, Samuel Finley Breese 1791-1872,Vail, Alfred
• Creator: Morse, Samuel Finley Breese 1791-1872,Vail, Alfred

Letter from Alfred Vail to Samuel Morse, January 11, 1857

• Date: January 11, 1857 19th century
• Creator: Vail, Alfred
• Creator: Vail, Alfred

Cover of Alfred Vail's Experiment Notebook

• Date: c. 1844
• Creator: Vail, Alfred
• Creator: Vail, Alfred

Sketch of Circuits Using One Battery

• Date: April 15, 1844
• Creator: Vail, Alfred,Morse, Samuel Finley Breese 1791-1872
• Creator: Vail, Alfred,Morse, Samuel Finley Breese 1791-1872

Alfred Vail's Drawing of Many Circuits with One Battery

• Date: c. 1844
• Creator: Vail, Alfred
• Creator: Vail, Alfred

Harold Sydney Geneen (1910-1997)

Communication Devices Installed, USNM & SIB

• Date: 1880