First US edition, the first one volume edition and also the first illustrated edition with 66 wood engravings by William Jewett interspersed throughout the text, issued in the same year as the London triple decker. Tall 8vo, purple-brown cloth, stamped in blind, title lettered in gilt. Spine slightly sunned, Oelrichs bookplate, a very good copy in custom-made cloth slipcase. A Haycraft/Queen Cornerstone, T. S. Eliot called this book the first and best modern detective story.