ACKNOWLEDGMENTS The author appreciates the comments and remarks of Craig Campbell (University of Texas, Austin) and of all the participants in the workshop dedicated to the commemoration of Vladimir G. Bogoras, held on May 14, 2015, in the framework of the joint anthropological seminar of the Department of Ethnography of Siberia at the Museum of Anthropology and Ethnography of the Russian Academy of Sciences and the European University at Saint Petersburg. The author also thanks Joselyne Dudding (Museum of Archaeology and Anthropology, University of Cambridge) and David G. Anderson (University of Aberdeen) for a discussion of Ethel John Lindgren's cinematic and photographic materials, which helped in the understanding and contextualization of the Prokofievs’ chronicles. The author is also grateful to Nikolai B. Vakhtin (European University at Saint Petersburg) for his comments on the first version of the article. I am very thankful to Olga Pak for her translation of this article. A Russian version will be published in Antropologicheskii Forum (2016, no. 29). FUNDING This article was written with support from the projects ‘‘Etnos:A life history of theetnosconcept among the Peoplesof the North’’ (European Social Research Council ES=K006428=1) and ‘‘EtnosandMinzu: Histories and Politics ofIdentity Governance in Eurasia’’ (The Leverhulme Trust, IN-2012-138). In addition the Russian Science Foundation(RNF 14-18-02785) supported the archival work in Saint Petersburg during the last stage of the research.Peer reviewedPublisher PDF