MACLEAN, Bonnie (American, 1939–2020). Bill Graham Presents Paul Butterfield Blues Band, Cream, and South Side Sound System Postcard. San Francisco: 1967. CGC graded 8.0, numbered, and encapsulated. Published in promotion of the concerts at the Fillmore Auditorium between August 22 and 27, 1967. 7 x 4 ½" card. 9 ½ x 9 ¼" sleeve. Near fine.