The store in Sycamore is The Hardwood Connection. They are North and a little west of Dekalb. They have a woodmizer and cut all there own domestics. Incredible selection!! That's where I used to buy all my "candy" until I started cutting for myself. One time they had some crotch slabs of ash that had to be strapped to the wall to keep from killing someone if it fell over. It could only be handled with a forklift! Pretty pricey though. Are you interested in coming through Peoria? It would probably be out of your way a little,(I am about 1 hour west of Bloomington if you are coming up I55), but the hours are good. I'll be home most of the weekend. I have as much stock on hand as some of the stores. And my prices are alot less!!!! I have a couple thousand pen blanks, and about 1500 board foot in the garage, shed, and basement. You could stop on the way back Sunday if you are interested, or have money left. Drive a truck though, I've got a lot of burl that is getting a little long in the tooth for staying outside. Everything under cover is full!!!
Their is another nice store in Waconda. It is called Woodwerks. It is pretty far north, and mostly cater to the "flat woodworkers". They don't have great Saturday hours, if at all, but they have a lot of nice industrial machinery and hardwoods. Check before making the travel.
I'll keep thinking, and let you know about anymore.