Just over four decades ago, on 1 May 1977, Folsom Field in Boulder, CO held over 60,000 most-likely-baked music fans for a concert featuring Country Joe McDonald, John Sebastian, Firefall, Bob Seger & The Silver Bullet Band, and headlined by Fleetwood Mac. My parents were two of those fans, and my father captured the following pics of the event (along with some periodic commentary from my dad at the time). Country Joe McDonald ("he was extra") John Sebastian ("he sucked") Firefall ("they were very good") Bob Seger & The Silver Bullet Band (the middle picture features Fleetwood Mac watching from the wings) Fleetwood Mac (the middle picture shows Christine McVie playing wooden chairs) At one point, a hang glider flew over the stadium, eliciting a cheering standing ovation from the crowd. Speaking of the crowd... The center of the second shot features two women with bino...