I know this is a bit of a drive for you, but there are some lumber yards in noVA which ahve some bow woods.
Colonial hardwoods in springfield,VA has a variety of wood, hickory, white oak, many exotics (jatoba bubinga zebrawood etc. I assume this is always changing), also cherry and hard maple ... probably other stuff too I just can't remember
Smoot lumber co. in alexandria, va. They have ipe in 2x4x8ft for around $50 ... thats alot of bow wood. They also have some basics liek maple etc. No other exotics as far as I know. Also they WILL NOT cut the ipe at all ... so it'll need to fit in your car or you'll be cutting it in the parking lot. I told them they were wimps and the last time I needed to cut ipe, I ripped a 6ft board by hand! I told them to buck up ... they didn't so plan for that.
Both places will let you rummage through the stacks if youre nice.
Smoot and presumably also colonial can often order other lumber for you ... but you probably won't be able to hand pick a single board from a stack.
Lastly ... woodcraft has thinwood craft board (1/16" - 1/2" or so) in a variety of woods from ERC to bubinga, to jatoba, to purpleheart. Some of them are suitable for board bows. Not the cheapest solution but readily available.
Hickory backed jatoba makes a decnet bow ... it's not what ipe is, but it can make a fine bow. It's also not expensive and can be had at colonial or woodcraft.
Maybe you can convince them to get soem osage boards .... probably not but worth a try.