Nemerov, Alexander, "Ground Swell: Edward Hopper in 1939," American Art 22, no. 3 (Fall 2008): 50-71. https://doi.org/10.1086/595807
McKiernan, Mike. "Edward Hopper, New York Movie 1939." Occupational Medicine. Volume 67, Issue 3, 1 abril 2017. 174–175. https://doi.org/10.1093/occmed/kqx024