1. How to Make a Happening Bookmark How to Make a Happening, accession number 1994.12.30. Search result 1 Artist: Kaprow, Allan Classification: Mixed media Materials: 33 1/3 rpm phonograph record with offset printing on paper label, black-and-white screen print on record cover, and paper sleeve Dimensions: 12 3/8 x 12 3/8 in. Accession Number: 1994.12.30