I make my own lams, Tony. I've been blessed with a good friend who owns 60 acres in Ohio which is loaded with Osage trees. Another friend recently gave me 7 Osage staves which are 12 years old and were kept inside out of the weather. 12 year old Osage is like gold..
My other bow making buddy buys rough cut boards at a sawmill beside his camp. We get red and gray elm, walnut, maple, and hickory boards and make our own core lams.
If you need the wood cleaned up, I can run the belly lams through the drum sander and I can taper the core lams for you.. You just pay for the return shipping..