The plot is dedicated to the 150th anniversary of the death of the Russian writer, author of the book "Journey from St. Petersburg to Moscow" A. N. Radishchev. The city of Leningrad. September 15, 1952 Institute of Russian Literature. Senior Researcher D. S. Babkin verifies the original autograph of A. N. Radishchev's suicide letter to his parents. V. Danilov, the curator of the manuscript department of the institute, at work.