The Foreign Hand Tie By: Randall Garrett

Devil's Paw By: Edward Phillips Oppenheim

The Lost Ambassador Or, The Search For The Missing Delora By: Edward Phillips Oppenheim

Double Traitor By: Edward Phillips Oppenheim

Vanished Messenger By: Edward Phillips Oppenheim

Devil's Garden By: William Babington Maxwell

Okewood of the Secret Service By: Valentine Williams

The Powers and Maxine By: Alice Muriel Williamson

The Dare Boys of 1776 By: Stephen Angus Cox

The Lost Despatch By: Natalie Sumner Lincoln

A Maker of History By: Edward Phillips Oppenheim

The Traitors By: Edward Phillips Oppenheim

The New Forest Spy By: George Manville Fenn

The Vultures By: Henry Seton Merriman

Tom of the Raiders By: Austin Bishop

The Arbiter A Novel By: Florence Eveleen Eleanore Olliffe Bell

On Secret Service By: William Nelson Taft

Savrola By: Winston S. Churchill

Inside the Lines By: Earl Derr Biggers

Yellow Dove By: George Gibbs

Marie Antoinette Romances, Vol 1: Balsamo, The Magician By: Alexandre Dumas

Marie Antoinette Romances, Vol 2: The Mesmerist's Victim By: Alexandre Dumas

Marie Antoinette Romances, Vol 5: The Countess of Charny By: Alexandre Dumas

Moon Destroyers By: Monroe K. Ruch

Return of Clubfoot By: Valentine Williams

Clubfoot the Avenger By: Valentine Williams