Prospect Obukhovskoi Oborony, 107.
In 1894—1906 this building housed the Smolensk Sunday Evening Classes for the workers of the Nevskaya Zastava. The Social-Democrats N. K. Krupskaya, P. F. Kudelly and L. M. Knipovich were among the teachers. The classes became a conspirative centre of Marxist propaganda. Many of the pupils of the school, among them I. V. Babushkin, the…