She wrote books, paperback booklets and articles about the planned language Esperanto and proofread the massive Esperanto–German dictionary of Erich-Dieter Krause, a work with 80,000 headwords over nearly 900 pages (1999).
After some time she stormed upstairs to her parents' second-floor flat in Leipzig-Gohlis, complaining: La infanoj diris, ke mia turbo estas Kreisel.
)[4] In 1910, with a group of his friends, Kolbe's father Reinhold Voigt, a convinced pacifist and socialist, had founded Frateco ("Brotherhood"), an influential workers' Esperanto association in Leipzig.
"[4] As early as his Mein Kampf polemic (1925), Adolf Hitler had attacked Esperanto as a supposed tool of his imagined Jewish world dominion.
In 1929 the Sennacieca Asocio Tutmonda, an umbrella organization of various left-wing workers' Esperanto groups, held its annual congress in Leipzig with 2,000 participants.