lower right in graphite: A. Walkowitz; lower right corner in graphite by unknown hand: "New York of the Future" / 14/11/27- 10.00 1E1
(Pace Editions, Inc., NY); Reba and Dave Williams, Greenwich, CT, 1986; gift to NGA, 2008
- Beall, Karen F., and David W. Kiehl. Graphic Excusrions: American Prints in Black and White, 1900-1950, Selections from the Collection of Reba and Dave Williams. Boston, Massachusetts: D. R. Godine, 1991, p. 20.