Original 1st printing 11 x 17" concert poster for Super-Sessioneer Al Kooper with King Crimson (featuring Robert Fripp and Greg Lake) and Aum appearing at the Boston Tea Party (15 Lansdowne Street location) in Boston, MA on 10/23-25/1969. Art by Eric Engstrom, medium flat index stock poster is in absolutely fantastic near mint (B+/A- to A-) condition; just one or two subtle age spots, a stray surface scratch or two and a trace of handling, otherwise a spectacular-looking example of this oddly-designed poster for Halloween at the Tea Party.