WWI 1918 Plane Identification books, (2), English & French, Rare, Silhouettes

Description

Silhouettes of Allied and Enemy Airplanes
Silhouettes D'Avions Allies et Ennemis
May 1918
On the index page:
"Important Notice - The German airplanes are often fitted with a device permitting the pilot to destroy his machine in case of a forced landing in the enemy lines.  This apparatus is composed of a box placed in the carlin.  A second box containing an explosive, is screwed to the bottom of this box.  In order to work this apparatus, a hand lever has only to be pulled.  The explosion takes place after 20 seconds.  Th box bears the following inscription near the hand lever:  Vorsicht:  Vorstecker nicht herausziehen. Lebensgefahr."
Planes for France, England, Belgium, Italy, United States, Germany
Paris Imprint for Paul Dupont
Two rare, paired plane identification booklets, one in English, one in French, each about 8-1/2" x 5-1/2", each about 60 +/- pages each book (30 leaves double sided), page numbering jumps around.
Paper or cardboard covers, supple pages, general agetoning throughout, string binding, good condition.
Some pretty rare planes listed, bi wing, tri wing, and new single wing:
Caproni
Caproni Triplane
Caudron
Letore
Handley-Page
Friedrichshafen
AEG
Gotha G
Vickers Scout
BE2e
Bristol Fighter
De Havilland
AR1
Hanriot
Sopwith
Salmson
SIA
Morane-Saulnier
Martinsyde
Spad
Armstrong-Withworth
DFW CV
Fokker Triplane
Nieuport
LVG
Albatros
Hannovraner
Pfalz
AGOC
Breguet
Spad
Rumpler
Halberstadt
Farman
Sopwith Camel
Sopwith Dolphin.
Nice pair of rare items for early aviation and WWI. These very rarely come up for auction, and about 11 of them in institutional libraries like the Smithsonian.