Vintage 1960s Psychedelic Rock and Roll Post Cards. Comprising 'The Youngbloods, Avalon Ballroom, 2/16/1968', 'The Paul Butterfield Blues Band, Fillmore, 1/18/1968', 'Charlatans, Western Front Dance Academy, 10/27/1966', 'Spirit, Avalon Ballroom, 8/23/1968', 'Mother Earth, Avalon Ballroom, 11/8/1968', 'Bill Haley and the Comets, Avalon Ballroom, 8/16/1968', 'Quicksilver Messenger Service, Avalon Ballroom, 10/27/1967', 'Siegel-Schwall Band, Avalon Ballroom, 2/9/1968', 'Big Brother and the Holding Company, FIllmore, 1/25/1968', 'Grateful Dead, Fillmore, 5/5/1967, one in pale green, one in pink', 'Jim Kweskin Jug Band, Avalon Ballroom, 12/8/1967', 'Blue Cheer, Avalon Ballroom, 12/31/1967'. Condition: Minor wear throughout includes minor discoloration and stains. No apparent folds, holes, or creases.