An original circa 1892 trade catalog titled "Edison Phonoplex System of Telegraphy," published by the Edison Phonoplex company of New York. The 37-page softcover booklet details Thomas Edison's induction telegraph system, featuring diagrams of telegraphy equipment, practical applications, sponsor advertisements, and an extensive list of railroad licensees including the Baltimore & Ohio R.R., Pennsylvania R.R., and Canadian Pacific. The inner cover displays period red ink overprint address updates to "110 East 23d Street, New York." Visually assessed in good antique condition overall with expected page toning, mild edge wear, and loose binding at the back cover page. H 9.25", W 5.875", D 0.125". Please see photos for condition. From the Rider Collection.