Acknowledgment
The Editor wishes to express his gratitude and appreciation to the following, to whom he is indebted for much valuable assistance in the form of illustrations and special information:
- Addressograph Co.
- “The American Boy.”
- American Chicle Co.
- American Cyanamid Co.
- American LaFrance Fire Engine Co.
- American Locomotive Co.
- “American Magazine.”
- American Pin Co.
- American Telephone and Telegraph Co.
- Armour & Co.
- Baldwin Locomotive Works.
- “Baltimore American.”
- Bethlehem Steel Co.
- James Boyd & Brother, Inc.
- Brunswick-Balke-Collender Co.
- Burroughs Adding Machine Co.
- California Fruit Growers’ Exchange.
- California Redwood Association.
- Chesapeake and Potomac Telephone Co.
- Colt’s Patent Fire Arms Manufacturing Co.
- Columbia Graphophone Co.
- Columbian Rope Co.
- Common Sense Gum Co.
- Consolidated Fire Works Company of America.
- Curtis Aeroplane Co.
- Curtis Publishing Co.
- Cutler-Hammer Manufacturing Co.
- Diamond Crystal Salt Co.
- G. M. Dodge Co.
- Eastman Kodak Co.
- Endicott, Johnson & Co.
- “The Field.”
- “Fire and Water Engineering.”
- Ford Motor Co.
- Gatchel & Manning.
- General Electric Co.
- General Motors Truck Co.
- Gloucester (Mass.) Board of Trade.
- B. F. Goodrich Co.
- Haynes Auto Co.
- Hendee Manufacturing Co.
- R. Hoe & Co.
- George A. Hormel & Co.
- Hotpoint Electric Heating Co.
- Hudson and Manhattan Railroad Co.
- Indiana Steel Co.
- Ingersoll-Rand Co.
- International Harvester Company of America.
- International Silver Co.
- Jacobs & Davies, Engineers.
- Lake Torpedo Boat Co.
- McClure Co.
- Merganthaler Linotype Co.
- Monroe Calculating Machine Co.
- New York Central Railroad Co.
- New York Edison Co.
- Niagara Falls Power Co.
- Otis Elevator Co.
- The Panama Canal, Washington Office.
- Pennsylvania Railroad Co.
- The Philadelphia Museums.
- Plymouth Cordage Co.
- Nicholas Power Co.
- Pyrene Manufacturing Co.
- “Railway Age Gazette.”
- Mr. George A. Reading.
- Remington Arms-Union Metallic Cartridge Co.
- A. I. Root Co.
- “Scientific American.”
- “Scribner’s Magazine.”
- Standard Steel Car Co.
- Capt. Charles H. Thompson.
- Mr. Charles L. Trout.
- Mr. Harold L. Tuers.
- United Shoe Machinery Co.
- United States Rubber Co.
- Waltham Watch Co.
- Westinghouse Co.
- Winchester Repeating Arms Co.
- Wilcox & Harvey Mfg. Co.
- “Winston’s Cumulative Encyclopedia.”