For all you folks sight-seeing the National Mall in Washington, DC, be sure to visit the Native Americam Museum (a block from the Air & Space Museum, and just a easy stroll from the Capitol.) They have a great new exhibit on braintanning deerskin, with exhibits you can touch and a step by step display in an exhibit room dedicated to tanning leather. You can see how to make primitive tools for fleshing and scraping from cow leg bones. While you visit, you can also see hundreds of arrow heads, and other great stuff, plus they have the best cafeteria in the mall (if you like traditional food.)
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