by Alfred Stieglitz, on fly leaf, lower left verso, in black ink: A souvenir of "Summer, 1886," / to the family. / Alfred
Georgia O'Keeffe; gift to NGA, 1949.
- Greenough, Sarah. Alfred Stieglitz : The Key Set : The Alfred Stieglitz Collection of Photographs. Washington, 2002: vol. 1, cat. 15.