http://vgt.davegh.com/index.phpNice, hi-res video game textures at the link above. Not a huge huge amount, but still pretty nice.
For a much larger selection, there is the Ryzom Asset Repository, which can be browsed, searched, and downloaded from individually, here:
http://media.ryzom.com/The entire pack of Ryzom content (which decompresses to about
11 Gigs, textures and models), can also be downloaded directly from Sourceforge, here:
https://sourceforge....ets.7z/download
Not sure which of those, if any, qualify for inclusion in the "Resources" area, but I thought I'd pass them on.