signed by artist, below image in black marker: artist's proof AP-0 New York 1962 William Carter; on verso, by unknown hand, upper left edge in black marker: W-1.7 10s 5.6 Ba[???] light de[?] 3 1/2; lower left in graphite, rotated counterclockwise: /1
William Carter, Los Altos Hills, CA; gift to NGA, 2012.
- Carter, William. Causes and Spirits: Photographs from Five Decades. Göttingen, 2011, p. 45.