Certain German soldiers who knew Esperanto sometimes tried to make contact with the underground group but were politely turned away because of the war situation and the danger that Esperantists faced if exposed.
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The Norwegian Esperanto League was founded January 27, 1911 after earlier groundwork had been laid some years earlier by Haldor Midthus (1841-1906), Norway's first Esperantist.
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The club began in 1909 the publication of the journal Esperanto-bladet, and some members began to think of a national organization of Esperantists.