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
Jadwin Pictures of Pole Changer
Oct 1846 letter to JH from Morse