Single sided folded flyer / announcement published in conjunction with a series of shows held across Leo Castelli's New York locations. Shows included: Joseph Kosuth, "The Eighth Investigation (Proposition Three," held at Leo Castelli, 4 East 77th Street, New York, October 2, [1971] ; Dan Flavin, "Two New Near Square Cornered Installations with their Diagrams,"Leo Castelli, 4 East 77th Street, New York, October 23, [1971] ; "Morris / Nauman / Serra / Sonnier : Works on Film," held at Leo Castelli, 420 West Broadway, New York, through October 9, [1971] ; "Robert Rauschenberg : Cardboards," held at Leo Castelli, 420 West Broadway, New York, October 16, [1971]; and "Robert Rauschenberg : Cardbirds," held at Castelli Graphics, 4 East 77th Street, New York, October 16, [1971].