If they are currently still active, then the best thing to do was suggested and make contact and ask for material in exchange for a link back to their site.
For old stars there are plenty of non-exclusive content providers that should be able to help you out with a package deal to cover your needs since your only looking for a picture or two I would assume. I saw AFSC was doing a deal for 600sd videos for $300, I would hit them up and see if they will do the same for glam pic sets. They have a pretty good collection of pornstar material. I'll let you decide for yourself if you want to deal with them or not
