Instructions how to assemble your inflatable Sherman tank.
Just in time for the D-Day anniversary.
(credit-The Tank Museum, Bovington)
Prior to the Normandy/D-Day invasion these were produced and used by the Tactical deception unit or "Ghost Army" to mislead the Germans as to unit positions and strength.
Beyer, Rick and Elizabeth Sayles. The Ghost Army of World War II: How One Top Secret Unit Deceived the Enemy with Inflatable Tanks, Sound Effects, and Other Audacious Fakery. Princeton Architectural Press, n.d. ISBN 978-1-61689-318-7.
The "n.d." you see after the publisher means "no date." It is really odd for a New York publisher to indicate no date on the title page, nor anywhere else I can find. The back cover mentions an "acclaimed documentary film The Ghost Army, which premiered on PBS in 2013," so I am guessing the book is from around that time.