Pseudonym For: Doughty, Francis Worcester, -1917; Senarens, Luis (Lu), 1863-1939
Items with "Howard, Police Captain" as Credited Author
The Boys of New York Pocket Library
21. Old Invincible73. The House of Mystery
94. Foxy and Brother, the Invincible Detectives
98. Detective Sleuth's Son
108. Sleuth-Hound Tom, the Veteran Detective
113. Dashwell, the Detective; or, The Mysteries of Seven Days
127. Hawk, the Weasel, the Baltimore Detectives
131. Young Hercules, the King of Detectives
139. Hank Hamilton, the Blue Grass Detective; or, the Horse Thieves of Kentucky.
The Boys of New York
The American Vidocq; or, The Life and Adventures of a Famous Thief-TakerBurt, the Detective; or, A Sleuth-Hound on the Track
Ferrett and Ferrett, the Twin Detectives; or, The Boys from Headquarters
Harry Hawk, the Young Chicago Detective
Young Weasel, the Baltimore Detective
The Hidden House; or, The Mystery of the Midnight Bell
The Life and Adventures of Hole, the Detective
Little Dick, the Boy Detective
Little Ferret, the Boy Detective
Monte, the French Detective and His Two New York Pupils
Monte, the French Detective in New York
Monte, the French Detective, in Chicago
Monte, the French Detective; or, The Many Disguises
The Mystery of a Black Box
Old Bullion, the Banker Detective
Old Crafty, the King of Detectives
Old Double Face, the Western Detective
Old Mystery
Old Wolf, the Secret Service Detective
The Red Leather Bag. A Weird Story of Land and Sea
Shadow, the Mysterious Detective
The Yellow Diamond; or, Groping in the Dark. A Very Mysterious Story
Young Sleuth and the Counterfeiters
Young Sleuth and the Great Wall Street Mystery; or, Tracing the Strange Tragedy of a Broker's Office
Young Sleuth and the Man with the Tattooed Arm; or, Tracking Missing Millions
Young Sleuth and the Scotland Yard Detective
Young Sleuth in Chicago
Young Sleuth's Long Trail; or, The Keen Detective after the James Boys
Young Sleuth, the Keen Detective; or, The Sharpest Boy in New York
Young Sleuth, the Keen Detective; or, Working with the Inspector
The Boys' Star Library
46. Old Invincible58. Young Hercules, the King of Detectives
78. Foxy and Brother, the Invincible Detectives
126. Hawk, the Weasel, the Baltimore Detectives
140. Dashwell, the Detective; or, The Mysteries of Seven Days
178. Hank Hamilton, the Blue Grass Detective; or, the Horse Thieves of Kentucky.
185. The House of Mystery
243. Sleuth Hound Tom, the Veteran Detective
313. Detective Sleuth's Son
The Champion Library
38. Young Vidocq41. Blundering Barney
54. The Girl Detective; or, the Convict's Daughter
58. A. D. T. ; or, The Messenger-Boy Detective
69. Lyny-Eye, the Detective: or, Under Suspicion
New York Detective Library
1. Old Stealthy, the government detective70. Shadow, the Mysterious Detective
Saturday Library
4. Young Vidocq, the Californian Detective12. Lynx-Eye, the Detective; or, Under Suspicion
17. Bob Burt; or, The Mystery of One Night
25. Blundering Barney; or, Born to Good Luck
88. Young Vidocq, the Californian Detective
104. Lynx-Eye, the Detective; or, Under Suspicion
114. Bob Burt; or, The Mystery of One Night
123. Blundering Barney; or, Born to Good Luck
186. Young Vidocq, the Californian Detective
202. Lynx-Eye, the Detective; or, Under Suspicion
212. Bob Burt; or, The Mystery of One Night
221. Blundering Barney; or, Born to Good Luck