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.
Rusty and Humphrey
© Sandy HawkinsPromenade of the Cranes
© Priscilla J. BurgersGwich'in Warrior
© Robert JensenPlanets Passing
© Marilyn CornwellBefore and After
© Guy D. BiecheleTrapped in my heart
© Debbie Bray