The book "Expedition Br. Kuznetsovs to the Polar Urals", St. Petersburg, 1911

Notes of the Imperial Academy of Sciences on the Physics and Mathematics Department. Volume XXVIII. No. 1. Scientific results of the Kuznetsov brothers expedition to the Polar Urals in 1909, under the command of O.O. Backlund.

On September 22, 1909, the head of the expedition, Oleg Backlund, sent a telegram from the village of Samarovsky, present-day Khanty-Mansiysk, addressed to Academician Chernyshev: "The Kara expedition, having successfully completed the route, completed the work on September 16" (Minutes of the meetings of the FMO, 1909).

On this day, the members of the expedition of the Kuznetsov brothers (the second name of the "Kara expedition") boarded a steamer going up the Ob River, and on October 2 returned to Tyumen without any special incidents.

The four and a half months that passed between May 10 and October 2 were filled with intensive research work and constant movement from place to place - on steamboats, boats, deer, sleds. Many hundreds of miles have been covered. Even the most concise and dry retelling of the route completed during these summer months speaks eloquently about the scale of the research carried out. The text of the book is accompanied by a large number of drawings, tables and maps.

The North Ural expedition of the Academy of Sciences and the Russian Geographical Society in 1909 made a valuable contribution to the study of the polar tip of the Ural Mountains. The name Polar Urals has finally been fixed in science. They began to call the northernmost part of the Ural Mountains - north of 66 ° C.