German Spies at Bay: Being an Actual Record of the German Espionage in Great Britain during the years 1914-1918, compiled from Official Sources: Free Audiobook and Listening Guide
German Spies at Bay: Being an Actual Record of the German Espionage in Great Britain during the years 1914-1918, compiled from Official Sources by Sidney Theodore Felstead: the LibriVox audiobook summary, 17 original MP3 tracks, 8:25:25 run