Minsk. The movement of vehicles, pedestrians on Sovetskaya Street, buildings, a memorial plaque at the house number 135, dedicated to the 1st Congress of the RSDLP. One of the participants of the 1st Congress B. L. Eidelman in his office. Moscow. IV-th World Congress of the Red Profintern: delegates in the Column Hall of the House of Unions, speech by A. Lozovsky. Aerostat before the flight. Pilot Smelov at the basket. Seeing off. Aerostat in the air. Vinnytsia, Orenburg. Preparation of equipment, seeds for sowing. Moscow. The First All-Union Party Film Conference: participants in the meeting, the presidium, including N. K. Krupskaya. Speakers: S.V. Kosior, Vladimir Nikolaevich Meshcheryakov, heads of the State Film Agency, VAPPA.