Letters from the earth /King Leopold's soliloquy. A defence of his Congo rule. With a pref. and appendices by E.D. Morel and 16 ills.Koning Leopold's alleenspraak. België's kolonialisme in de Congo. [Voorw. van E.D. Morel]. Vert. door E. Tas.Il soliloquio di re Leopoldo. [Un attualissimo pamphlet de grande scrittore americano contro i crimini dei colonialisti nel Congo. Trad. di I. Quarantotti Smith. Pref. E.D. Morel].Mark Twain, ein Amerikaner in Heidelberg : sein Bummel durch Deutschland 1878 /