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[[stereoscopic view card]] [[sepia tone stereoscopic photo of many, many soldiers in uniform (without arms) at attention in formation for review, troop leaders out front. Sign in background reads: THIS IS [[blanked out white space?:]] UNEXCELLED OPPORTUNITIES OFFERED MANUFACTURERS FOR BUILDING SITES - [[crossed out name]]Chamber of Commerce]] [[preprinted]] [[caption]](30) 1918 Uncle Sam Provides for Comfort of His Soldiers, Colored Troops En Route to France Taking Train Rest at Railway Division Point.[[/caption]] [[vertical in left margin]] Keystone View Company Manufacturers COPYRIGHTED MADE IN U.S.A. Publishers[[/vertical in left margin]] [[vertical in right margin]] Meadville, Pa., New York, N.Y. Portland, Oregon, London, Eng., Sydney, Aus.[[/vertical in right margin]][[/preprinted]]
Transcription Notes:
Stereoscopic view cards (taken with a stereo camera with two lenses capturing slightly different views of the same scene) such as this are placed in a stereoscope card holder (see link) and when viewed through the lenses of the stereoscope appear to be seen in three dimensions. The first 3-D viewing device. https://en.wikipedia.org/wiki/Stereoscope
The soldiers are all wearing the flat brim WWI Campaign hat, olive drab trousers, blouse coat, and puttees (leggings).