One that still hangs with me was The Youngbloods at Montgomery College in Rockville, Md. in '71. They played the annual spring concert there on the soccer field in a steady downpour. Someone had passed out visquine (sheet plastic) and only about 400 hundred people were there. The pot smoke was so thick under the plastic that all you had to do was inhale to get a buzz. Gave rise to lots of monkey business, you bet. vl