Original 1st printing 20 x 13" concert poster for Iron Butterfly appearing at Mammoth Gardens in Denver, CO from 6/26-27/1970.

 Art by John Fish, medium-thick textured stock poster is in good (B) condition; there are corner creases and multiple pin/tack holes in all four corners and along the upper margin, along with a few small splatter stains in the lower right margin/corner, a few thin vertical roll bends, handling creases and tiny pin-prick spots hiding in the image area, a bit of light surface dirt, a soft thin vertical bend in the upper left margin and a few stray fingerprint smudges, tiny pin-prick stains and a couple of tape marks on the reverse, otherwise OK.

 Pretty cool (and VERY uncommon) mid-1970 Iron Butterfly poster from one of Denver's largest rock venues (current home to Denver's Fillmore).