I believe this is from 1987, this is an authentic concert poster from about 35 years ago drawn by Matt Groening right before the Simpsons took off. John French – Henry Kaiser – Andy West. At the I Beam on Haight St in San Francisco. This poster measures 8 1/2 x 14 inches. The top left has been bent for a long time but it looks like it could be flattened. We are here to make people happy, thank you for your business.