histomap

histomap_1931_john-sparks.jpg (590 KB)

c. 1931


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    HoChunk Recent comment authors
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    HoChunk
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    Holy shit…this exact same chart was up on the wall of my elementary school, thirty-odd years ago. I remember sitting nearby & staring at it, trying to comprehend the whole thing whenever I got bored in class. I’d forgotten that it ends pre-WWII.

    Nice find!