1911 The Diamond Maker May 1911 The Azure Ring Jun 1911 A Spontaneous Combustion Jul 1911 The Terror in the Air Aug 1911 The Black Hand Sep 1911 The Artificial Paradise (The Man Who Was Dead) Oct 1911 The Steel Door Nov 1911 The Sand-Hog (The Tunnel Mystery) Dec 1911 The Bacillus of Death Jan 1912 The Master Counterfeiter Feb 1912 The Firebug (The Firefiend) Mar 1912 The Yeggman Apr 1912 The Green-Goods King May 1912 The Poisoned Pen May 1912 The White Slave Jun 1912 The Treasure Vault Jul 1912 The Forger Jul 1912 The Unofficial Spy Aug 1912 The Smuggler Sep 1912 The Invisible Ray Oct 1912 The Campaign Grafter Nov 1912 The Kleptomaniac Dec 1912 The Opium Joint Jan 1913 The Vampire Feb 1913 The Death Thought Apr 1913 The Green Curse Apr 1913 The Sybarite May 1913 The Phantom Circuit Jun 1913 The Elixir of Life Jul 1913 The Dream Doctor Aug 1913 The Death House Sep 1913 The Submarine Mystery Oct 1913 The Bomb-Maker Nov 1913 The Ghouls Dec 1913 The Scientific Gunman Jan 1914 Guy Garrick (revised book edition of The Scientific Gunman) 1914 The Air-Pirate Jan 1914 The Abduction Club Feb 1914 The Billionaire Baby Feb 1914 The Radium Robber Mar 1914 The Eugenic Bride Apr 1914 The Terrorists May 1914 The Dead-Line May 1914 The Curio Shop Jun 1914 The Germ Letter Jul 1914 The Wireless Wire-Tappers Aug 1914 The Family Skeleton Sep 1914 The Devil-Worshipers Oct 1914 Happy Dust Nov 1914 The Murder Syndicate Dec 1914 The Stolen War-Secret Dec 1914 The Diamond-Queen Jan 1915 The X-Ray Detective Feb 1915 The Tango Thief Mar 1915 The Supertoxin Apr 1915 The Sixth Sense May 1915 The Absolute Zero Jun 1915 The Sleep-Maker Jul 1915 The Evil Eye Aug 1915 The House of Death Sep 1915 The Demon Engine Oct 1915 The Social Gangster Nov 1915 The Voodoo Mystery Dec 1915 The Treasure-Train Jan 1916 The Truth-Detector Mar 1916 The Soul-Analysis May 1916 The Mystic Poisoner Jun 1916 The Phantom Destroyer Jul 1916 The Beauty-Mask Aug 1916 The Love-Meter Sep 1916 The Vital Principle Oct 1916 The Submarine Mine Nov 1916 The Rubber Dagger Dec 1916 The Gun-Runner Jan 1917 The Sunken Treasure Feb 1917 The Love-Philter (The Love Potion) Apr 1917 The Panama Plot May 1917 The Black Diamond Jun 1917 The Bitter Water Jul 1917 The Nitrate King Aug 1917 The