Popular Mechanics, v. 24, n. 6, 1915

https://books.google.it/books?id=Lt8DAAAAMBAJ&lpg=PA743&hl=it&pg=PA801#v=onepage&q&f=false

1915

Public Domain

World War I

Is Part Of
Title	Alternate label	Class
Atlantic-crosser American submarine
Italian machine gun
Searchlights signaling
Giant public war map
Armored motor craft
Submarine torpedo boat
Field-telephone equipment used by French signal corps
Wireless telephone
The U. S. submarine "F-4"
German "Big Berthas"
Gas protectors used by French soldiers
Artificial boulders avalanches
German double-decked ambulance
Barbed-wire doors in French trenches
Ice machine used at field hospitals
American toys
Model city
Warship and torpedo toys
Instrument for finding a ship's position
Muzzle support for gun