Upstairs at Mobil: Musings of a Shareholder 1981 Hans Haacke Upstairs at Mobil: Musings of a Shareholder Photoetching, collage of Mobil stock certificate and drawing Ten parts, each framed: 39 1/8 × 24 13/16 in. (99.4 × 63 cm) Gift of Marshall Field’s and The Albert A. Robin Estate by exchange