all on mount: lower left verso, in graphite: A1; by Georgia O'Keeffe, lower left verso, in graphite: 3D; by later hand, upper left verso, in graphite: 1 (in square)
Georgia O'Keeffe; gift to NGA, 1949.
- Bry 1958, no. 102, pl. 14.
- Twice A Year 1 (Fall-Winter 1938): n.p.
- Bry, Doris. Exhibition of Photographs by Alfred Stieglitz. National Gallery of Art, Washington, 1958: no. 102, pl. 14.