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- World War, 1914-1918 — Secret service -- Germany
World War, 1914-1918 — Secret service -- Germany — Audiobooks
Throttled! The Detection of the German and Anarchist Bomb Plotters
by Thomas J. (Thomas Joseph) Tunney
Fighting Germany's Spies
by French Strother
The German Spy in America
by John Price Jones
The German Secret Service in America 1914-1918
by John Price Jones, Paul M. (Paul Merrick) Hollister
Les espionnes à Paris
by Émile Massard