Alexander Konstantinovich Glazunov was a Russian composer of the late Russian Romantic period, music teacher and conductor. He served as director of the Saint Petersburg Conservatory between 1905 and 1928 and was also instrumental in the reorganization of the institute into the Petrograd Conservatory, then the Leningrad Conservatory, following the Bolshevik Revolution. He continued heading the Conservatory until 1930, though he had left the Soviet Union in 1928 and did not return. The best known student under his tenure during the early Soviet years was Dmitri Shostakovich.
Herbert Clark Hoover was the 31st President of the United States (1929–1933). Hoover was originally a professional mining engineer and author. As the United States Secretary of Commerce in the 1920s under Presidents Warren Harding and Calvin Coolidge, he promoted partnerships between government and business under the rubric "economic modernization".
Wolfgang Paul was a German physicist, who co-developed the non-magnetic quadrupole mass filter which laid the foundation for what we now call an ion trap. He shared one-half of the Nobel Prize in Physics in 1989 for this work with Hans Georg Dehmelt; the other half of the Prize in that year was awarded to Norman Foster Ramsey.