Original 1st printing 17 x 22" concert poster for Poco (featuring Richie Furay & Jim Messina, formerly of Buffalo Springfield) with Brethren at the Boston Tea Party (15 Lansdowne St location) in Boston, MA on 6/18-20/1970. Art by Drew/Engstrom, medium flat index stock poster is in very good to excellent (B/B+ to B+) condition; a 1&1/2" crease in the lower left corner, a few stray scattered surface/age/rust spots, a tiny mark on the second "o" of "Poco" and a pair of slight surface smudges, otherwise fine. VERY bright/pretty BTP poster.