Yo Farmer! I missed your post with the Johnson outboard due to a hard drive crash on my PC. That's a nice early motor (1929 3hp.) and were supposed to be good runners. I've seen them go for $300. unrestored to about $800. restored. Here's a fantastic discussion site to help get it running http://www.aomci.org/cgi-bin/yabb2/YaBB.pl in the ask-a-member section. Tune-up parts are still available ~
Hey Rob, 95% of what I've found is quartz/quartzite, after that it would be Rhyolite, and just the occasional Chalcedony, Flint & Jasper. Usually the more exotic the stone the older the find is - I think the earlier NA's had more trade, going on, than the Woodland Period NA's. There's some real competition going on out there these days for the prime artifact grounds -