American Basswood Carving 
Offers basswood and butternut carving wood. Carving tools and books also available.
http://www.americanbasswoodcarving.com/Cape Fear Tupelo Company
Sells solid tupelo gum blocks, mill direct for carvers. Light and white, hand-picked with custom cuts available.
http://www.capefeartupelo.com/
Old Texas Woodcarvers Shop
Features carving tools, accessories, classes, and hand carved items.
http://www.texaswoodcarvers.com/
Profitable Hobbies Corporation
Offers carving, engraving, sandblasting and airbrushing systems as well as training.
http://www.profitablehobbies.com/
West Falls Woodcarving Products
Woodcarving supplies made in the USA. Offers oar pocketknife and fixed blade, sharpener, sheath and strop. Also books by Ross Oar.
http://www.oarcarver.us/
Chris Daunt
UK based supplier offers wood blocks.
http://www.chrisdauntwoodengravingblocks.co.uk
