Awarding M.V. Keldysh and I.G. Petrovsky

USSR. Moscow. April 1966. Ambassador Extraordinary and Plenipotentiary of Chile to the USSR Maximo Pacheco and Soviet mathematicians awarded silver medals from the University of Chile, President of the USSR Academy of Sciences Mstislav Vsevolodovich Keldysh and Rector of the Lomonosov Moscow State University Ivan Georgievich Petrovsky (from left to right) during the award ceremony. The exact date of the photo is unknown. Lev Porter/TASS