Check out this article on photography and graphic design. In this photo gallery, you'll find wood grain pictures, pictures of rust, and other texture photographs.
Rosy Red
© Monnie RyanForest for the LEGS?
© Michelle AltonCape Blanco Exposure
© Randall J. ScholtenNuts and Bolts
© Heather LoewenhardtRusty Locks
© Giancarlo BisoneSand Sculpture
© Melissa G. Meiselman