San Francisco, CA: Family Dog Productions, 1968. First Edition. Single Sheet. A poster (appx. 14" x 19&1/4") announcing a series of three concerts headlined by the Quicksilver Messenger Service, along with Buddy Guy (b. George Guy, 1936- the venerable American Blues guitarist & singer) & Sun House, during February 23-25 at the Avalon Ballroom in San Francisco. The American artist Paul Zavorskas, of whom we could not obtain any information..... More