- eBookThe World's Greatest Military Spies and Secret Service AgentsGeorge Barton
- eBookThe History of EspionageGeorge Barton
- eBookThe World's Greatest Military Spies and Secret Service AgentsGeorge Barton
- eBookAngels of the BattlefieldGeorge Barton
- eBookThe World's Greatest Military Spies and Secret Service AgentsGeorge Barton
- eBookAngels of the BattlefieldGeorge Barton
- eBookThe World's Greatest Military Spies and Secret Service AgentsGeorge Barton
- eBookThe World's Greatest Military Spies and Secret Service AgentsGeorge Barton
- eBookAngels of the BattlefieldGeorge Barton
- eBookBarry Wynn; Or, The Adventures of a Page Boy in the United States CongressGeorge Barton
- eBookThe Mystery of CleverlyGeorge Barton
- eBookBarry Wynn; Or, The Adventures of a Page Boy in the United States CongressGeorge Barton