Original 1st printing 18&5/8" diameter round concert poster for the Youngbloods appearing with Spirit and Genesis (Los Angeles band) at the Kaleidoscope in Los Angeles, CA from 4/5-6/1968.
Design by Dahlgren/Eidos, Ltd., image is # 6 in the Kaleidoscope series.
Medium-thick flat index stock poster is in beautiful mint near mint to near mint (A/A- to A- ) condition; an absolutely unbeatable crisp/clean example of this original 1968 Kaleidoscope poster with a sweet design.
Check out this great informative list of shows (including this one) held at the Kaleidoscope in 1968:
http://rockprosopography101.blogspot.com/2010/04/6230-sunset-boulevard-hollywood-ca.html