| Unidentified photographer Untitled 1947-1952 (ca) 35mm positive slides, printed alloy mask and glass covers and black tape binding Private collection of Stephen Grose Aircraft recognition - U.S. Navy LL/50426 Each slide has a series number.
RECOGNITION TRAINING.
U.S. NAVY.
SPECIAL DEVICE CENTRE.
RESTRICTED.
Winet Lab's. N.Y. (in small print)
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