This 3-inch psychedelic button from 1966 reads, “Bill Graham Presents Blues-Rock Bash II/The Butterfield Blues Band/Jefferson Airplane/Muddy Waters/In Dance-Concert At Winterland/Fillmore Aud.”  Sweet, right?

Psych Fest starts tomorrow at The Hideout in Chicago, featuring buttoned up bands like Plastic Crimewave, Black Wyrm Seed, Great Society Mind Destroyers, Black Fog, and more.

Checkout this rare psych button on Hake’s website.