This folder contains correspondence and other documents relating to the technical and commercial development of the telegraph. Included are letters pertaining to Edison's and George Harrington's lawsuit against Jay Gould and the Atlantic & Pacific Telegraph Co. There is also an item regarding the transfer of Edison's rights to his facsimile telegraph to publisher William Randolph Hearst and a letter from Josiah C. Reiff discussing the death of Edison's father, Samuel.

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