This folder contains correspondence, memoranda, and a tax bill relating to the business of the American Telegraph Works. This company was formed in Newark, New Jersey, on October 1, 1870, to manufacture telegraph instruments. It had ceased operation by the beginning of January 1873. The correspondents include George Harrington, a former assistant secretary of the treasury, who was Edison's partner in the American Telegraph Works.
All of the documents have been selected except for a few letters unrelated to Edison. Courtesy of Thomas Edison National Historical Park.