doi:10.7916/D82J6CKMThe Autopiano Factories in New York City, (50th to 52nd Sts., Facing Hudson River) the Largest Factories in the World Devoted to the Manufacture of Player Pianos Exclusively. the Atlantic Battleship Fleet Passing the Autopiano Factoriespostcardsstill imagePlaceFactoriesHudson River (N.Y. and N.J.)