Here are some really cool cards I recently grabbed but, quite frankly, can't tell you anything about, other than what is visible on the cards themselves.
(Perhaps our old pal CTYankee Jim A. is lurking out there, or maybe Big Amigo Don Hayes, and we can convince them to come home to the Forum and educate us further on these cool little cards!)
Anyway, they appear to be called US Army "Know Em Charts" and were published by "G.G.M.", copyright 1942. Cards say "There are 12 charts".
What is so cool is that these cards are mechanicals, with a little wheel mounted in a card sandwich, which by rotating will show off different info. The artwork is quite a familiar style, from the WW2 candy box cards and the like.
Dimensions, excluding the little bit of wheel that juts out, is 2" by 2 7/16".
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![[linked image]](http://i145.photobucket.com/albums/r229/ralphperry/KnowEmCharts-front.jpg)
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![[linked image]](http://i145.photobucket.com/albums/r229/ralphperry/KnowEmCharts-back.jpg)
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![[linked image]](http://i145.photobucket.com/albums/r229/ralphperry/militaryfronts.jpg)
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![[linked image]](http://i145.photobucket.com/albums/r229/ralphperry/militarybacks.jpg)
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Anybody have an ACC reference or other hints on this one?