Rare Books
Samuel Finley Breese Morse : three letters written while he was inventing his electromagnetic telegraph
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Samuel Morse letters
Manuscripts
Two of the letters are written to Congressman John B. Aycrigg. In these letters, Morse is talking about the telegraph and is requesting assistance in getting his brother Sidney Morse permission to use a map. These letters are dated 1843 and 1844. HM 79876-79877.
mssHM 79876-79878
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Examination of the telegraphic apparatus and the processes in telegraphy
Rare Books
713551 1868-1870. v. 4, pt. 1.