Acknowledgments: the authors are very grateful to a number of people for their kind help provided during the process of investigation: our gratitude to the Evgeniy Evgenyevich Stepanov, the outstanding specialist in the field of Nikolay Gumilev’s biography; our thanks to Yefim Anatolyevich Rezvan, Deputy-Director of the of Peter the Great Museum of Anthropology and Ethnography (the Kunstkamera), to the Professor Elena Yuryevna Raskina (Moscow), and Anna Genrihovna Kaminskaya, who was close to know A. A. Akhmatova (Saint Petersburg). We are especially indebted to Professor Dinora Sadyqovna Azimova (Tashkent) for her suggestion in February of 2015 about the characters of the painting as presumably Yusuf and Zukeikha; the study of the textual decor has verified this suggestion. We are especially obliged to Professor Marzieh Yahyapoor (Tehran University), Firuza Melvill-Abdullaeva, Director of the Centre of Persian Studies, Pembroke College, Cambridge, UK, and to Leyla Gasemovna Lahuti, the researcher of the Department of Oriental Written Sources, Institute of Oriental Studies RASc. We express our special gratitude to the administration of Lev Gumilev Memorial museum for the opportunity to publish the “Persian Miniature”, included in the exposition of Museum.