I had no idea Canned Heat was still around. I’m not surprised: bands that played at Woodstock have a long shelf life. Canned Heat was your basic blooze-rock boogie band, Southern California style. They weren’t known for their cover art but the package of Future Blues ruled as well as rocked. I hope the moon landing truthers haven’t used it to prove that Neil Armstrong never hit a tee shot on the moon.
The best back cover scan I could find was of a CD reissue of the 1971 album. It could be subtitled Hippies On The Moon:
The full LP isn’t online, so here are the first and last tracks of the original album: