When I was going through my woodworking period, and building a humidor. I purchased all my spanish cedar up in White Plains, NY. These guys have a warehouse full of exotic woods. Exit 6 off 287.
M.L. Condon Co.
250 Ferris Ave.
White Plains, NY 10603
United States of America
Phone: 914-946-4111
Fax: 914-946-3779
Call them for a catalog. They usually have large thickness board stock. However, they will plane it down for you to size for an additional cost. It's worth the ride.
Roscoe