The Edward T. LeBlanc Memorial Dime Novel Bibliography

Edition - The Bradys and the Messenger Boy; or, The A.D.T Mystery - Secret Service edition, first appearance

(source: Stanford Libraries)
Online Full Text: Stanford Digital Repository
Series: Secret Service: Old and Young King Brady, Detectives no. 237
Item: The Bradys and the Messenger Boy; or, The A.D.T Mystery
Author: New York Detective (pseudonym used by multiple people)
Date: August 7, 1903
Publisher: Frank Tousey (New York (N.Y.): 24 Union Square) -- United States