(1) On Kawara, "Dear Adrian Piper, I woke up at…", 1970. Series of 30 postcards for each day of April, 1970.

From Adrian Piper, Context #8: Incoming information from April 1970, 1970. Black vinyl three-ring loose leaf notebook, 12” x 9” x 3” with acetate-covered pages. Collection Adrian Piper Research Archive Berlin. © APRA Foundation Berlin.

Removed during Alternative Museum Retrospective, Adrian Piper: Reflections 1967-1987, in 1987.

(2) Adrian Piper, Wittgenstein’s Philosophical Investigations, 1967. Two to three 11 x 8 ½” sheets of blue line ¼” graph paper, taped together along horizontal seams, covered with handwritten Rapidograph India ink text commenting on paragraphs of Ludwig Wittgenstein’s Philosophical Investigations and arranged in a geometrical design. Collection Adrian Piper Research Archive Berlin. © APRA Foundation Berlin.

Missing from the APRA Foundation Berlin, Postfach 28852, 10131 Berlin, Germany, since before April 2015.

(3) Adrian Piper, Drawing of David Rosner (1967; charcoal on newsprint, 11 x 14”). Collection Adrian Piper Research Archive Berlin. © APRA Foundation Berlin. Missing from the APRA Foundation Berlin, Postfach 28852, 10131 Berlin, Germany, since before April 2015.

(4) Adrian Piper, Mona Lisa with Braces (1966; graphite pencil on paper, 9 x 12”). Collection Adrian Piper Research Archive Berlin. © APRA Foundation Berlin.

Missing from the APRA Foundation Berlin, Postfach 28852, 10131 Berlin, Germany, since before April 2015.

(5) Adrian Piper, Wahlkampagne (2019-2021; detail: transparent acrylic catalogue dispenser, 25 cm x 30 cm x 12 cm, overprinted with ≤ 15:1 icon and text, filled with ~100 individually wrapped pins). Collection Adrian Piper Research Archive Berlin. © APRA Foundation Berlin.

Missing from the Adrian Piper Research Archive Foundation Berlin, Brunnenstraße 23, D-10119 Vorderhaus façade, since 26. February 2021.