on verso, signed by artist, lower right in graphite: Robert Adams 1987; lower left in graphite: 4/30 / The Pawnee National Grassland, 1984; lower center in graphite: (c) 1988 Robert Adams; by unknown hand, lower right in graphite, to the left of signature: RA.0991.Y
Robert Adams, Astoria, OR; NGA purchase (through Fraenkel Gallery, San Francisco) and gift, 2012.
- Adams, Robert. Perfect Times, Perfect Places. New York, 1988: 25.