Old Barcelona news via Google & Dutch national library
Via the Royal (Dutch) Library: “Spanish newspapers say that the real inventors of the Paris Gun [vèrdragend kanon / Pariskanone / Gran Bertha (sic)] … are two Spaniards, who offered their invention to the German consulate in Barcelona. Thereupon they were taken in a U-boat to German to show their invention to Krupp.” (NRC, April [...]


