I've promised my hunting partner I'd build a rifle for him. After looking thru Hanson's Trade Rifle Sketchbook he's smitten with the idea of a Krider Indian trade rifle. I'd like this to be an historically correct build, but at this point I haven't seen a photograph of one and I don't even know what kind of lock was most likely used. Other than Hanson's book I can't seem to find much on this rifle. Any sources or even educated speculation would be appreciated. Thank you.