That's a question that Frank could possibly help you with, you may want to PM him so that he'll see it. He stays pretty busy so he doesn't always see every post.
A quick google search pulls up 3-4 places around Kansas City. Might be a bit farther than you want but you could always make a day out of it and stop for some bbq while you are there.
I stated that Im in south central Missouri. Im just north of Rolla. Not willing to drive to KC or St Louis. Shouldn't be a need for that. Lots of hickory in this area. Want a local source (within 50 miles or so). Not interested in mixed hardwoods or oak. That I can find no problem. I want hickory and hickory only.