Astor Tower, Chicago, IL, Floor Plan, c. 1960
Graphite on paper
56.4 x 86.3 cm
Delineated by R.A.B.
Job no. 657-261
The Archive of Bertrand Goldberg, gifted by his children through his estate, RX23664/7.212
Barrow, Heather and Lori Hanna Boyer. Bertrand Goldberg Collection Finding Aid. (The Art Institute of Chicago, 2007), p. 14.