American Journal Science January 1848 _ Morse
The_Electro_Magnetic_Telegraph
Shaffner_s_Telegraph_Companion
The_American_Electro_Magnetic_Telegraph
Cameron,+Henry+Clay,+Reminiscences+of+Joseph+Henry
Cameron,+Henry+Clay,+Jonathan+Dickinson+and+the+College+of+New+Jersey
Frank Leslie’s Popular Monthly – Telegraph
The A B C of Wireless Telegraphy
1847-The_American_Electro_Magnetic_Telegraph
Early_History_of_the_Telegraph_Vail
USRE118 Morse Receiving Magnet
Philadelphia and Trenton 1860_map
(reference: W.A. Baker and Tre Tryckare, “The Engine Powered Vessel” Crescent Books, 1972)
Jadwin Pictures of Pole Changer
Oct 1846 letter to JH from Morse
1847-The_American_Electro_Magnetic_Telegraph
March 1848 Silliman’s Journal Morse Telegraph
Transactions_of_the_American_Electrochem Joseph Henry
Van+Rensselaer,+Cortlandt,+Signals+From+the+Atlantic+Cable
From Plainfield Courier News August 30, 1905 …
Princeton Basin office in 1851 mentioned
Electro-magnetic_telegraphs_H.R._no._64
The Electromagnetic Telegraph – Calvert
Gluckman-JosephHenrys1842-1992
Electro-magnetic_telegraphs_H.R._no._64
SIA_007001_B8_F22_Transcript Morse to Henry 1846
SIA_007001_B8_F21_L1_Transcript Vail to Henry
The Edinburgh philosophical journal – 1825 – Barlow – impractical
