lower right in plate: John Sloan 37; lower left in graphite: 100 proofs; lower center in graphite: Winnowing Wheat; lower right in graphite: John Sloan
- Morse, Peter. John Sloan's Prints: A Catalogue Raisonné of the Etchings, Lithographs, and Posters. New Haven and London: Yale University Press, 1969, p. 330, no. 297, iii/iii.