New York: The Artist, 1968. 16 7/8 x 22" poster, offset printed on recto only. Photographically illustrated.
The poster prospectus for three happenings, 'One Rock Pile, One Time', 'Another Rock Pile, Another Time,' and 'At Night, After." The prospectus solicits participation in the happenings, and instructions those wishing to participate ti attend a talk to be given at the Union Junior Ballroom March 19, 1968 at the University of Texas.
Folded three times for mailing, with Kaprow's rubberstamped Long Island address.
Near fine with some light soiling. Item #26696