Check out the blog 2 Warps to Neptune for some classic pics of young folks in the 70-80's playing D&D. Its great stuff, and there's some good info on the infamous Summer Adventure Camp from days of yore.
These pics are fun to blow up and look at closely for all the little details - snacks, books, clothes, etc, you probably haven't seen much of since the early 80's.
See lots more at the blog here!
The whole blog in general is pretty cool, actually.