Over 16,000 royalty free reference and texture images available.
http://freetextures.3dtotal.com
Massive resource for different types of free texture images.
http://www.cgtextures.com
3) Grunge Textures
High quality textures for download free of charge.
http://www.grungetextures.com
4) Texture King
Free stock textures for grunge, dirt, plaster, concrete and more.
http://www.textureking.com
A range of good quality texture photos.
http://www.my3dtextures.com
