A rare print made for Georgia O’Keeffe by Todd Webb in 1963 from Stieglitz’s canceled glass plate negatives. In this image a young Steichen is demonstrating painting to Stieglitz’s daughter, Katherine. While the date is unknown, Katherine (Kitty) was born in 1898 and she looks 4 or 5, so perhaps this was taken in 1902 or 1903. Seeking information.
Hoffman, Katherine. Stieglitz: A Beginning Light. New Haven: Yale University Press, 2004. p. 180.