Moscow. Institute building on Sovetskaya Square; reading room, premises; auxiliary library, repositories, mechanized supply of books, service of readers by the staff of the institute; copying originals in a darkroom. The building of the Institute Museum on Bolshaya Dmitrovka. The work of the staff, the directorate of the museum. NK Krupskaya at work in the office of the museum. Chairman of the Directorate I. Skvortsov-Stepanov. Exhibits, excursion to the museum.