["The Return of Solar Pons"] is an assembly of thirteen short stories about Sherlock Holmes, set forth with all his customary equipment (Watson, room, housekeeper) and in very much the mood and mode of Conan Doyle. Edgar W. Smith, "Buttons" of the Holmesian devotees (or addicts) in this country, finds Mr. Derleth the most consistently successful imitator in Holmesian history. One cannot after all quarrel with the judgment. But imitation is the operative word.

James Sandoe, in a review of "The Return of Solar Pons," in New York Herald Tribune Book Review, April 12, 1959, p. 11.