This issue of the collection "Golden Horde Civilization" presents quite interesting works by M.G. Kramarovsky, Istvan Vashari, R.Yu. Pochekaev, G.V. Vadimirov, P.N. Petrov, J.M. Sabitov T. Kavaguchi and H. Nagamine about "New Data on "Genghis-name" Utemisha-haji," authors of the fundamental Japanese edition of the work of Utemisha-haji. We hope that the publication of the translation of the article by Z.V. Togan and most importantly - one of the letters of Timur Bayazit, that is, sources that have not yet been used in Russian-language historiography will contribute to the piggy bank of important sources.