NTProf, the "typical" EWB is like Snedeker said- longish, narrow, rectangular, little width taper, usually diamond nocks. The book Encyclopedia of Bows, Arrows, and Quivers of the Native Americans, vol. 1 by Jim Hamm and Steve Allely has many, many examples. There are a few wild cards like the Sudbury-type bows, and a few variations like mild recurves or deflex/reflex profiles, but 90% of the historical examples fit into the style just mentioned.