20 newly discovered letters were added for the 1990 Dutch centenary edition.
There were editions in 1914; an expanded version appeared in English in 1958; 20 newly discovered letters were added for the 1990 Dutch centenary edition.
But its new centenary edition includes a copy of the 1911 version, which shows Britons thought the words neon, petticoat, and 'indecent dance' the Cancan all deserved similar recognition.
