I know that seasoned Apple wood is available in abundance at my wood supplier
http://www.smoki-chipz.co.uk in Northamptonshire. They also have seasoned American Hickory, English Oak, (Maybe getting some Post Oak (White Oak)), Cherry, Whiskey Barrel Staves and I am informed that they may be able to get some Peach although this would be expensive.
Pecan is apparently often taken up by the furniture manufacturers.
Beerz
Adie