 Mashkov continued surveying memorial buildings (some of them already scheduled for demolition) and headed the restoration of Pashkov House (then known as Rumyantsev Museum, later Lenin Library and Russian State Library).He took no part in architectural disputes of 1920s, but was present in professional journals and wrote college textbooks (1935).In 1934, Mashkov became a professor in Moscow Architectural Institute; since 1935 he chaired the department of architecture of Moscow Construction Institute.