- Listenly
- Public Library
- Project Gutenberg
- Detectives — United States
Detectives — United States — Audiobooks
The Spiritualists and the Detectives
by Allan Pinkerton
The Somnambulist and the Detective; The Murderer and the Fortune Teller
by Allan Pinkerton
The Burglar's Fate, and The Detectives
by Allan Pinkerton