Dick Higgins comments are printed on the verso of the plywood cover. They read "Calling, a Happening by Allan Kaprow performed in and out of New York in the summer of 1965, is one of the landmarks of the form, and its scenario typifies the poetic rictual syle he has developed. This present graphic representation, however, began as an improvision when Kaprow, playing with a set of rubber stamp letters, stamped out each word of the scenario on a separate index card. I continued the game by assembling the cards on the copyboard of a graphic arts camera and shooting themby adding an element of color play. The resulting object os not, however, a final one in any sense. While the original acenario may be read by starting from bottom to top, right hand column to left hand, on the silver, blue, red, yellow, and, finally, brown sheets, there are other stories which the reader is invited to tell, other games for him to play." Kaprow died at age 78 years in San Diego on April 5, 2006 -- Source of annotation: Marvin or Ruth Sackner.