Playboy Club International, Lower Floor Plan, 1968
Ink and zip-a-tone on mylar
63.8 x 104.6 cm
The Archive of Bertrand Goldberg, gifted by his children through his estate, RX23664/171.3
Barrow, Heather and Lori Hanna Boyer. Bertrand Goldberg Collection Finding Aid. (The Art Institute of Chicago, 2007), p. 34.