An exceedingly rare handbill for Freak Out: Son of GUAMBO, an August 1966 concert at L.A.’s Shrine Exposition Hall staged by Frank Zappa and the Mothers of Invention, and also featuring The Factory (with Lowell George).  GUAMBO stood for Great Underground Arts Masked Ball and Orgy.  The original GUAMBO show took place in July 1966, celebrating the second anniversary of the Los Angeles Free Press (an underground newspaper).  It was a success and so Son of  GUAMBO was scheduled.  According to the Pasadena Independent newspaper, “Twelve weather balloons gilded with fluorescent paint and spotlighted with “black lights” will float on the ceiling of the Shrine Exposition Hall in Los Angeles Saturday night for “Freak Out,” the latest trend in way-out entertainment.A “Tower of Light” and 16 projectors manned by a dozen projectionists will present an elaborate collage of slide projections on all walls and even the ceilings at the auditorium. “The Mothers of Invention” and “The Mothers Auxiliary” will play for dancing.”

This handbill is in very good condtion with tape pulls on the back, a minor tape stain/pull in the top right corner, and pinholes in the corners.  The only example we’ve seen.  8 1/2″ x 11″.