"Le Sherlock Holmes Américain."

L'Affaire Bardouillet, one of the
adventures of Harry Dickson by Jean Ray
repr. Belgian publisher Le Cri

Harvard's Houghton Library blog features its copies of Harry Dickson—"le Sherlock Holmes Américain"—a pulp series penned by Belgian author Jean Ray (aka Raymundus Joannes de Kremer, John Flanders, and "the Belgian Poe") that had its beginnings in dime novels published from 1907 to 1911.