Oil on canvas with aluminium [aluminum]; [this photo taken at the Whitney Museum of American Art, New York; painting now at The Museum of Modern Art (MoMA), New York].
"Prometheus and Hercules, a sculpture by Koch, sits on the windowsill between the artist and his model." (excerpt from: Lopate, Phillip, et al. John Koch: Painting a New York Life. New York: Historical Society; London: Scala, 2001, p.66)
