[1]: 7 His stories for the Munsey pulps are marked by a frank eroticism unusual for its time, together with frequent settings in Oriental climes.
There followed a long string of positions as editor or advertising representative for various trade journals, including The Office Outfitter, Towns Magazine, Boot and Shoe Recorder, Cook County Real Estate Board Quarterly, Dry Goods Guide and The Scoop.
Lovecraft roundly condemned the story's frank eroticism: " "Pilgrims in Love" by De Lysle Ferrée Cass, is contemptibly disgusting, unspeakably nauseating...We do not care for subjects so near allied to vulgarity, however 'diplomatically' they may be 'handled'.
We prefer a more idealized Orient to read about: let us have 'nature to advantage drest', as in the beautiful romance of "Prince Imbecile" by C. MacLean Savage, or "The Invisible Empire" by Stephen Chalmers.
In addition to The Airship Boys in the Great War, or the Rescue of Bob Russell (a novel, 1915, as by De Lysle F. Cass) and the stories he did for Munsey, Cass is listed as author of numerous newspaper features beginning in 1913, unspecified material for periodicals as varied as Short Stories, College Humor, Collier's and Good Housekeeping, as well as the author of two books, The Baby Book (1941) and Waggish Tales from the Czech (1949).