TELEPATHIC MUSIC No. 5,4,3,2,1. 1972.

NYC: John Gibson Gallery, (May 1-29), 1972
15.2 x 10.6cm, 1pp offset in black, red and blue on one side only of a vellum coloured card to create the impression of a standard index card filled with the show’s details and with “principle of equivalence permanent creation” stamp (offset not hand stamped). A very fine example of this emphemeral document.