CHAPTER XXIII
1836—1837
First exhibitions of the Telegraph.—Testimony of Robert G. Rankin and Rev. Henry B. Tappan.—Cooke and Wheatstone.—Joseph Henry, Leonard D. Gale, and Alfred Vail.—Professor Gale's testimony.—Professor Henry's discoveries.—Regrettable controversy of later years.—Professor Charles T. Jackson's claims.—Alfred Vail.—Contract of September 23, 1837.—Work at Morristown, New Jersey.—The "Morse Alphabet."—Reading by sound.— First and second forms of alphabet