Scarce orange 8 x 4 backstage pass for a "Free Concert" at London's Hyde Park on September 6, 1969, listing in the lower left, "Musicians Enclosure, Non Transferable." In fine condition. Accompanied by a letter of provenance, in full: "This is to confirm the authenticity of the Jefferson Airplane/Grateful Dead backstage pass for the ill-fated Hyde Park free concert 1969. This was an event that I spent some time staying at the Airplane mansion on Fulton St. organizing. The bill would also have included Quicksilver Messenger Service, Sons of Champlin, Joy of Cooking and Ace of Cups. A late pull out by Warner Bros., who were to underwrite the costs of the London portion of the tour caused it to be called off."
