The Museum of Forgery contributes new posthumous artworks to the oeuvres of Marcel Duchamp, Josef Albers, and others.
JGS Boggs makes detailed, one-sided, exact-size ink drawings of U.S. currency and uses his drawings as money. The government prosecutes him for counterfeiting but is not able to win a conviction.
Hans Haacke considers signing the rain, the ocean, fog, etc. (He decides not to.)
On February 25th, Piero Manzoni issues a certificate of authenticity declaring Marcel Broodthaers a poet.
Yves Klein declares November 27th a worldwide "Theatre du Vide" (Theater of Emptiness).
Robert Rauschenberg erases a drawing by Willem de Kooing and nominates the resulting almost-blank piece of paper as a new artwork.
Marcel Duchamp nominates a snow shovel as a work of art, calling it "In Advance of a Broken Arm."
4004 B.C. or earlier
Adam names all the creatures of the earth brought to him by God.