Swamp Monkey, I don't know if it would be any help, but the anthropology/history dept. on the M.U. campus is supposed to have a very good collection of many older native bows. I've only seen a few pics and read about them--would love to stop in view them myself sometime if possible.
Last summer I visited the Grayson Collection at MU. It is a marvelous collection. I saw and measured a wide variety of North American Indian bows, arrows and quivers. Unfortunately pre-Columbian/ mound builder bows are nonexistent.
Since that time I found another whelk incised image of an archer. This one came form the Spiro area too. I know some time has passed since I last posted on this, but I was reading through Jackcrafty's double curve bow thread (
http://www.primitivearcher.com/smf/index.php/topic,9076.0.html ) in the how to and build along section. In there he had images of his bows and some historic bows. Some were Blackfeet and one was Apache. I am not saying the mound builders passed their knowledge along to the Blackfeet and Apache but the bows look like what was inscribed on the whelk shells.
Each one looks deflexed on the tips, and that still puzzles me as to why do that to a bow. Was that their way of reducing mass?
I am also reluctant to read too much into those shell engravings. Perspective and size relationships were not something the artists were overly burdened with. That said, I see a pattern and it is what I have to operate with. More food for thought. Gimme your thoughts.
Well it just so happens I have a piece of Osage that is BEGGING me pick this notion back up. SO . . . I will. I am going to think about an Osage double curve with sinew bands. No promises on when I can post more but hey, I waited three years to get back on this . . .
cheers.