Philip Glass Ensemble, Original Silver on Black Silkscreen Poster, Benefit for WXPN, Philadelphia, 1982I purchased this poster at Brimfield last summer and sat on it, thinking with some digging I'd find another copy of it out there for reference, but now I've done some digging and have not! I was also reminded of it in the wake of Philip Glass withdrawing the world premiere of his Symphony No. 15 "Lincoln" which addresses democracy and warns against tyranny from the Kennedy Center in protest: "the values of the Kennedy Center today are in direct