Detectives — Audiobooks
Bucholz and the Detectives
by Allan Pinkerton
Mississippi Outlaws and the Detectives Don Pedro and the Detectives; Poisoner and the Detectives
by Allan Pinkerton
Fifty Years a Detective: 35 Real Detective Stories
by Thomas Furlong
Knots Untied; Or, Ways and By-ways in the Hidden Life of American Detectives
by George S. McWatters
How to be a detective
by James Brady
Practical Instruction for Detectives: A Complete Course in Secret Service Study
by Emmerson Wain Manning