where can I find internet information and possibly pictures of the "smoke-in" held in Washington D.C., 1979/80

Question

It was an annual 4th of July type of "demonstration".

Answer 1

If you mean the annual Hemp Smoke-In, here ya go:

http://www.myspace.com/4thofjulysmokein

Pics from the event found on that MySpace page.

http://dcpages.com/cgi-bin/dcpdir/jump.cgi?ID=5630