“The Day Dr. Knox Did It” may be read as Warren’s artistic response to the suicide of Ernest Hemingway. The poem repeats an important motif from Warren’s second, unpublished and untitled novel, written in the 1930’s. It also contains some interesting correspondences—and equally important contrasts—to the work of Ernest Hemingway, especially the short story “Indian Camp.”
Perkins, James A.
"Observations on Robert Penn Warren’s “The Day Dr. Knox Did It”,"
Robert Penn Warren Studies: Vol. 7, Article 6.
Available at: https://digitalcommons.wku.edu/rpwstudies/vol7/iss1/6