When I needed samples to use as examples, I used the Library of Congress. http://www.loc.gov/rr/print/catalog.html
For me they filled all my needs:
public domain images ( not all are so be careful...)
could select images that needed retouching or restoration
strong, interesting subjects
didn't have to ask permssion, only a reference to the source
Originally Posted by foxa71
I'm building my website and would like to post before and after works for touch-ups, enhancements, manipulations, restoration, and more to demonstrate my work to clients. I need pictures though, so instead of asking people individually, is there anyone who might volunteer? I would give you copmplete credit for your photos and can even link to your email or website if you would like.