MANNES, LEOPOLD (1899–1964), U.S. pianist and co-inventor with Leopold *Godowsky of the Kodachrome color process. He was born in New York, the son of David Mannes, the violinist and conductor of the New York Symphony Orchestra. He studied musical composition in Rome and was an accomplished pianist. He worked with Godowsky and together they found a successful method of producing color film. They experimented in the Eastman Kodak Laboratories in Rochester, New York. In 1939 Mannes left Rochester and joined his father as codirector of the Mannes School of Music. In 1953 he reorganized it as Mannes College of Music of which he was president.