INVENTORS AT WORK
Copyright by Park & Co., Brantford, Ontario.
PROFESSOR ALEXANDER GRAHAM BELL.
Inventors at Work
With Chapters on Discovery
By George Iles
Author of “Flame, Electricity and the Camera”
Copiously Illustrated
Publisher's emblem
New York
Doubleday, Page & Company
1907
Copyright, 1906, by
George Iles
Published October, 1906
All rights reserved, including that of translation into foreign languages, including the Scandinavian
TO MY FRIEND
JOSEPHUS NELSON LARNED
OF BUFFALO, NEW YORK
