I saw he sells board staves, but I couldn't find backing strips, and I'm not shure about ripping and smoothing lams from a hickory board.  I may want to build a bend through handle, and so may need a single piece. 
I did find some 1/8" hickory backings at 3 Rivers Archery.  They cost more per volume, but they are already a uniform thickness.  I don't expect the same quality, but I've read that hickory can stand a lot of ring violation.  3 Rivers is half a country closer, but the total cost per volume of wood is comparable. 
I'm still debating between the two, it will probably come down to whether or not I can get a few good backings out of a 3/4" board with a table saw and rasp.
Thank you,