Popular Mechanics, v. 27, n. 1, 1917

https://books.google.it/books?id=-NsDAAAAMBAJ&printsec=frontcover&hl=it&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false

1917

Public Domain

World War I

Is Part Of
Title	Alternate label	Class
Shrapnel-proof ambulance
Dreadnaught "Arizona"
Large aeronautic motor
The zeppelin observation car
Self-generating wireless power for aeroplanes
German ambulance train
The artillery of the U. S. dreadnaught "Pennsylvania"
The decorations of Belgian aerial scouts' airplanes
The cockpit of a French military aeroplane
Bludgeons used by Austrian soldiers
Camouflaged pontoon bridge
American military biplane
Portable electricity generator used by English soldiers