American screenwriter and novelist, who specialized in pulp fiction, including detective and science Fiction tales. He was also a numismatist and coin collector. Pen names: Horace Appleton; Albert J. Booth; Paul Braddon; R. T. Emmet; Tom Fox; Philadelphia Detective; Gaston Garne; K. F. Hill; Police Captain Howard; Jas. D. Montague; Richard R. Montgomery; Ralph Morton; A New York Detective; Percy B. (Percy Bolingbroke) St. John, 1821-1889; Hal Standish; D. W. Stevens; Francis Worcester Doughty.