Bud was an individual in a detective novel Data was reading in early 2364 to become more prepared for a Dixon Hill adventure. In this novel, his foster father was Cap Fallon. (TNG: "The Big Goodbye")
The pages seen in the episode were actually from the detective novel,
The Listening Man, by author John A. Moroso. This novel was published in 1924. Information on Bud was from pages 107 and 131.