Hugo Gernsback frequently formed new partnerships with investors for a new magazine or other opportunity (such as a radio station). The Experimenter Publishing Company was incorporated in March 1915. The corporate officers were Hugo Gernsback, his brother Sidney Gernsback and Milton Hymes. Hymes had worked with Gernsback since 1908 and was an officer in both the Electro Importing Company and the Experimenter Publishing Company. Hymes died in a railroad accident in 1917. Robert W. De Mott replaced Hymes as advertising manager and corporate Secretary.