Original 1st printing 13 x 20" concert poster for a pair of early-summer 1970 shows held at Mammoth Gardens in Denver, CO; acts listed include: John Sebastian appearing with Poco from 5/29-30 and Spirit appearing with Pentangle and Gypsy from 6/5-6;

 Art by (and SIGNED in black pen by) John N. Fish, medium-thick textured stock poster is in excellent (B+) condition; there is a single tack hole in the top center margin, along with a series of VERY light horizontal roll creases, a few stray handling dings/tiny stress creases hiding within the image area, a VERY tiny drip stain in the left margin and a couple of nearly-invisible dings scattered around the outer margin area, otherwise fine.

 ULTRA-SCARCE ARTIST-SIGNED multi-act poster from one of Denver's largest rock venues (current home to Denver's Fillmore).