I remember visiting Peter Mason Bond (PEMABO) at his amazing garden of signs in a lot above the Haight somewhere around Clayton near 17th
Does anyone have more info on him? What happened to the signs after 1972?
I've only found 3 photos of it at http://nightflyergraphics.com/image/places/pemabo1
Rolling Stone #31 may have an article on it. If anyone can find this, let me know.
Also documented in a folk arts book.