Unusual printer's proof for 2 posters in the Portland area from 1970.  One side is a single color print for a show by The Animals, The Seeds and Outer Edge at the D. Street (Division Street Corral) and the other side is a poster for Chicago and River at Springer's Ballroom.  This side is multi-colored, but is slightly off registered as shown.  It measures 17.5 by 22.5 inches. An oddity.