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.
Drax Power Station
© Vincent LoweJoshua Trees in a Snowstorm
© Jill OdiceDesert Storm
© Awadh M. alshmlaniMission Impressionable (August 2002 finalist)
© Patricia MarroquinBarbed Ice
© Jerry MudgeRocks and lines aligned with the Milky Way
© Graham D. SherCallas In Bloom
© Millie A. Talarico