lower left in graphite: Etat IV/2/5(?); lower right in graphite: SWHayter 53; by later hand, lower right in graphite: 70-; by later hand, lower right verso in graphite: 936/70-
- Black, Peter and Desiree Moorhead. The Prints of Stanley William Hayter: A Complete Catalogue. Mount Kisco, NY, 1992, no. 210.