Telegraphy - History, Science, and Engineering through Historical Reproduction

Building a Telegraph/Learning Morse Code

The Boy Mechanic

Description of the American electro magnetic telegraph: now in operation between the cities of Washington and Baltimore

by Alfred Vail

Early History of the Electro-Magnetic Telegraph

from the Letters and Journals of Alfred Vail

Edison, Quadraplex Telegraphy (Audio Book)

Channel Capacity (toward contemporary communication)

Channel Capacity (part 2)

Channel Capacity (part 3)

Thomas Edison was America's most famous telegrapher

Edison, Boyhood in Port Huron, Michigan (Audio Book)

Boy's Life Magazine - Morse Code Machine

The practical telegraphist and guide to the telegraph service

by William Lynd (1884)

Everything is New at Some Point... How to Dial a Telephone, 1927

(what relays are needed to make the analog telephone work?)