Texture Links
From K-3D
CGTextures
CGTextures offers photographs of materials ("Textures") on its website ... No payment or royalties are required to use these Textures.
BurningWell.org
A repository for public domain ("free-for-any-use") images
GIMP Savvy
A Community-Indexed Photo Archive
3D Excellence
Free Textures
Resource Bag
Free Textures
Texture Warehouse
Free textures, licensed under a Creative Commons License (Attribution-NonCommercial-ShareAlike 2.0)
Openfootage.net
Free textures, and HDR light probes. licensed under a Creative Commons License (Attribution-NonCommercial-ShareAlike 2.0)
Equirectangular Enviroment Maps
Creative Commons-licensed content on Flickr tagged with equirectangular
