Title: Perepiska V. I. Lenina i rukovodimykh im uchrezhdeniĭ RSDRP s partiĭnymi organizat︠s︡ii︠a︡mi, 1905-1907 gg
Subjects: Sources, Rossiĭskai︠a︡ sot︠s︡ial-demokraticheskai︠a︡ rabochai︠a︡ partii︠a︡, History