This will end in tears: Zeppelins to make tourist flights over London. (Via Airshipworld.)

Image source: from the front cover of Louis Gastine, War in Space: or, an Air-craft War between France and Germany (London and Felling-on-Tyne: Walter Scott Publishing, 1913). (OK, it's Paris, not London -- so I cheated.) The oldest paperback I own, incidentally.

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