Large collection of textures for personal non-commercial use only. The textures, are arranged into categories. Also provides tutorials for texture mapping, creating arbitrary dimensional textures and further instructions. http://astronomy.swin.edu.au/~pbourke/texture/
Researchers at Columbia University and Utrecht University have collaborated in an extensive investigation of the visual appearance of real-world surfaces. This joint effort has resulted in three databases. Information about the database, samples, BTF (Tex http://www.cs.columbia.edu/CAVE/curet/
High quality Earth and Mars planets maps, wallpapers and resources for 2D and 3D content creator. LightWave and/or Terragen compatible meshes, and terrains. http://www.space-graphics.com/
High-resolution textures on CD-ROM, to use in various image and video editing, animation and 3D applications like Photoshop, Paint Shop Pro, Bryce, Poser and 3D MAX. http://thepluginsite.com/products/mutation/
Photorealistic textures of people, trees and shrubs, building materials, surfaces, vehicles, indoor plants, and others available on CD. Free samples at website. http://www.realworldimagery.com/