Check out this Roky Erickson Fairfax, California handbill. Of course, it's signed by Roky. This is the December 9th, 1975 gig that was recorded by Jack Ortman and bootlegged as Shrunken Heads. Or course, it was ultimately re-released on the Roky CD Club and mixed from the original master tapes. Here's the link: http://www.texaspsychedelicrock.com/2008/09/roky-cd-club-44.html
Anyway, this handbill is a rare one.