lower right in graphite: Harry Callahan; lower right verso in graphite: #18
Mr. and Mrs. David C. Ruttenberg, Ruttenberg Arts Foundation, Chicago, Illinois; gift to NGA, 1991.
- Dürer to Diebenkorn: Recent Acquisitions of Art of Paper, National Gallery of Art, Washington, D.C., 1992, no. 85.
- Harry Callahan: Color, Providence, [Rhode Island], 1980, illus. pl.31.
- Stevens, Nancy. "Harry Callahan: A man revered for his black and white observations has been quietly working in color for years," American Photographer (October 1980), illus. p.70.