"...beginning on October 1,* Billy Apple performed Vacuuming, which consisted of vacuum cleaning the second floor front and rear space, landing, stairs and entrance at 161 West 23rd Street in New York City. The work was still in progress as of December 11. The vacuum bags discarded after each cleaning are proof of its signififcance."
Kuspit, D. (2003). The End of Art. New York, NY: Cambridge University Press. p. 69