Grigory Zinoviev
Anyway, the curious scrollers may be excided to find online not only the addresses, but also the home telephone numbers of Matilda Kshesinskaya (#414), Aleksandr Kerensky (#11-960) on the pages of 'Ves Peterburg', as well as of Grigory Zinoviev (#127-61) on the pages of 'Ves Leningrad'.