staves, Billets & blanks
Many decent bow woods species are readily available through commercial timber suppliers, but self bow staves & billets - especially yew - can be harder to find.
Whilst you might have some success through word of mouth within the bowyer community, or by speaking to local tree surgeons and timber yards, I sometimes have a few going spare, mainly ash but occasionally yew and other species too.
blanks
I also keep blanks of the board bow series available for those who’d like to try finishing one out for themselves.