Here are a couple more bows from the Grayson collection that were a little unusual. The first picture is from a native north American tribe, I either neglected to check the label or I forgot the specifics. What makes it interesting is that the entire bow is wrapped in birch bark.
The second and third pictures are of a split bamboo self bow, very thick and with very widely spaced nodes. Nothing fancy, about five feet long, the outside/node side is the back, the inside of the stalk/stave is the belly.
Correction: wrapped bow is Egyptian, Its been hard to concentrate on anything but baseball here lately. Thanks Pat.