The artist to Emilie V. Clarkson, New York
Greenough, Alfred Stieglitz: The Key Set (Volume One), no. 34
The Amateur Photographer 7, 11 July 1888, cover
Hartmann, Landscape and Figure Composition, p. 92, fig. 94
Hartmann, ‘Figure Composition,' The Photographic Times, no. 42, January 1910, p. 29