Original 1st printing 13 x 20" concert poster for a pair of late-spring 1970 shows held at Mammoth Gardens in Denver, CO; acts listed include: Mountain appearing with Shocking Blue and Blues Image from 5/15-16 and Eric Burdon & War appearing with Fever Tree from 5/22-23;

 Art by John N. Fish, medium-thick flat vellum stock poster is in near mint to excellent (A-/B+ to B+) condition; aside from a hint of edge/corner-tip wear, a stray handling ding or two and a whisper of light surface dirt/smudging around the outer margin area, it is a VERY sharp example of this oddball little mid-1970 multi-act poster from one of Denver's largest rock venues (current home to Denver's Fillmore).