Wig-Wag, Pratt Institute, Oct 1917. Creator: Bain News Service.

Wig-Wag, Pratt Institute, Oct 1917. Creator: Bain News Service.

3-010-813 - Heritage Art/Heritage Images

Wig-Wag, Pratt Institute, Oct 1917. Members of the U.S. Army Signal Corps using signal flags during training at the Pratt Institute, Brooklyn, New York during World War I.

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