Efimov, A. V. From the History of Great Russian Geographical Discoveries in the Arctic and Pacific Oceans, 17th – First Half of 18th Century (Iz istorii velikikh russkikh geograficheskikh otkrytiy...), 1950. In Russian

Ефимов А.В. Из истории великих русских географических открытий в Северном Ледовитом и Тихом океанах XVII – первая половина XVIII в.
Москва: Государственное издательство географической литературы (Географгиз), 1950.
319 с., 13 л. карт.: ил., карт.; 26 см. Твердый переплет, увеличенный формат.
Тираж: 20 000 экз.
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Efimov, A. V. Iz istorii velikikh russkikh geograficheskikh otkrytiy v Severnom Ledovitom i Tikhom okeanakh XVII – pervaia polovina XVIII v. [From the History of Great Russian Geographical Discoveries in the Arctic and Pacific Oceans, 17th – First Half of 18th Century].
Moscow: State Publishing House of Geographical Literature (Geografgiz), 1950.
319 pp., 13 leaves of maps.: ill., maps; 26 cm. Hardcover, enlarged format.
Print run: 20,000 copies.

This 1950 work by Alexey Vladimirovich Efimov, a Corresponding Member of the USSR Academy of Sciences, is a foundational scholarly study of a pivotal era in exploration. The book is a revised and significantly expanded edition of the author's earlier 1948 monograph on Russian expeditions in the Pacific. It provides a comprehensive account of the "heroic campaigns" of Russian frontiersmen, sailors, and naval expeditions that mapped the vast, unknown territories of the Russian Arctic, the Far East, and North-West America during the 17th and first half of the 18th centuries. The narrative covers landmark achievements such as Semyon Dezhnev's voyage through the Bering Strait, the expeditions of Vitus Bering and Alexei Chirikov, and the cartographic work that filled these "blank spots" on the world map. Recognized for his outstanding contributions to geography, Efimov was awarded the prestigious Semyon Dezhnev Prize by the USSR Geographical Society for this and related works. Based on extensive archival documents and cartographic collections, this well-illustrated volume with numerous maps was intended not only for specialists but also for the wider Soviet intelligentsia.