lower right in plate: John Sloan 17; lower left in graphite: 100 proofs; lower center in graphite: Hell Hole; 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. 212, no. 186, ii/ii.