M.M. Ippolitov- Ivanov and Ye. A. Kolchin (second row, fourth and fifth from left) among the operatic class students of the Conservatoire.
A.P. Ostrovskaya and A.F. Goedicke among the participants of the demonstration (1st of May 1936).
A.V. Lunachersky and M.M. Ippolitov-Ivanov among the jury of the competition for amateur button – accordion players. Hall of Columns of the House of Trade Unions (1930).