1968. Documenta Four. Kassel, Germany.

1968. Kaspar Thomas Lenk sculpture. Documenta Four. Kassel, Germany.

1968. Christo and Jeanne-Claude sculpture. Documenta Four. Kassel, Germany.

1968. Christo and Jeanne-Claude sculpture. Documenta Four. Kassel, Germany.

1968. Documenta 4. Kassel, Germany.

1972. Performance. Documenta Five. Kassel, Germany.

1972. Performance. Documenta Five. Kassel, Germany.

1972. Performance. Documenta Five. Kassel, Germany.

1972. Janis Kounellis. Documenta Five. Kassel, Germany.

1972. Janis Kounellis. Documenta Five. Kassel, Germany.

1972. Documenta Five exhibition. Kassel, Germany.

1972. Documenta Five. Demarco with work by Ben Vautier. Kassel, Germany.

1972. Ben Vautier. Documenta Five. Kassel, Germany.

1972. Documenta Five. Sculpture by Duane Hanson. Kassel, Germany.

1972. Documenta Five, Kassel, Germany. Painting by Chuck Close.

1972. Gilbert and George. Documenta Five. Kassel, Germany.

1972. Gilbert and George. Documenta Five. Kassel, Germany.

1972. Documenta Five exhibition. Kassel, Germany.

1972. L-R: Marcel Broodthaers, Lucio Amelio. Documenta Five. Kassel, Germany.