Iles, George, 1852- *Patent Room 27.42
Inventors at work, with chapters on discovery. New York. Doubleday, Page & Co. 1906. xxii, (1), 503 pp. Illus. Portraits. Plates. Diagrams. 8°
Same. 1907. 22 1/2 cm. *A. 4420.1 The Artz copy contains the author's presen- tation inscription to Professor Trent.
«Tor. -Inventions.