Where is/are good places to buy materials to build a laminated bow ? All bamboo, wood, or glass reinforced.

at the top of the page is  tradgang sponsors list. lots of choices there. Troy Breeding @ the wood gallery and Binghams are good choices

I'll throw in an endorsement for Troy Breeding.

I've spoke to him directly a few times and you can't find a nicer, more knowledgeable guy. Also he has some of the coolest spliced lams I've seen for some really neat looks under clear glass.

I just purchased some spliced veneer from Troy... Superb stuff... I would recommend him.

BigJim also has some very nice stuff and he's a good guy to deal with.
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Andy