Inventors at work, with chapters on discovery.
Iles, George. 1852- *Patent Room 27.42
Inventors at work, with chapters on discovery. New York. Doubleday, rage & 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 presenta- tion inscription to Professor Trent.