Spencer, Try making a google search for "free textures" - I'm not kidding, I haven't bookmarked any sites, the first page will bring links to my favourite sources of textures, CGTextures, imageafter and others - not sure of the spelling. These are ofcourse not ready to use normally, You'll have to do a lot of editing first. CGTextures has some nicely done photos which works very well, because they have good lightning and shadows, IMO.