Three interesting original press photographs of the Russian scientist most famous for his invention of the theremin, one of the first electronic musical instruments. Two of the photographs, stamped 1930 on the verso, show him demonstrating the theremin around the time of its introduction to U.S. audiences; the third picture, stamped 1928, shows him using another device, for altitude measurement. Each 6.5 x 8.5 inches, with original press captions on the verso.