American artist and inventor (1791–1872) whose development of the telegraph revolutionized communication—and indeed, society as a whole—and represented a crucial step toward such later innovations as the telephone. ALS signed “Sam. F. B. Morse,” one page, 5.25 x 7.5, April 15, 1871. Morse writes to M. D. Phillips in Henrietta, New York. In full: “In reply to your request of the 12th inst. I refer you to a work entitled ‘The Men of the Time,’ published by Redfield New York 1852. The biography in that work is in the main correct as to the facts….” Small repaired hole near but not touching signature, light mailing fold through signature (tiny small edge separation), and subtle, very faint marginal toning, otherwise fine, clean condition. Auction LOA John Reznikoff/PSA/DNA and R&R COA.