Dan Graham
[Artist, critic, and theorist, b. 1942, Urbana, Illinois, lives in New York.]

 A [spatial, temporal] work had only to be exhibited in a gallery and then written about and reproduced as a photograph in an art magazine. Then this record of the no longer extant installation, along with accretions of information after the fact, became the basis for its fame, and to a large extent its economic value.