Classic! Where did you dig this up?

About a year ago, I did one of my many mindless google image searches and found it, and only very recently saw it again in my work computer. I did a search again to look for a credit for it, but to no avail...I wish I really had a hard copy of this...classic indeed!

any idea on a year for this? I couldn't find one on the flyer.

Maybe Randy would know, It reminds me of the old "Hunk" guide to Orange County. I'm guessing '81 or '82.