- 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
- EbookThe World's Greatest Military Spies and Secret Service AgentsGeorge Barton
- EbookAngels of the BattlefieldGeorge 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