After a recent discussion about bows and making them I wanted to look into making them a more traditional way. The Tukudeka of the Yellowstone region made a crazy bow out of bighorn sheep horns. According to legend their bows were able to shoot clean through Bison. I came accross this site on how to make one. http://www.heartwoodbows.com/Bighorn_sheep_bows.html#2757
Hopefully someday I'll have time to come back and make one!