Peter Goldmark

Peter Goldmark (1906 – 1977) was a Hungarian-born, American engineer who, during his time with Columbia Records, was instrumental in developing the long-playing (LP) microgroove 33-1/3 rpm vinyl phonograph discs which defined home audio for two generations. Goldmark's LP records were introduced by Goddard Lieberson (April 5, 1911 – May 29, 1977), who later became president of Columbia Records from 1956 – 71 and 1973 – 75.

Source

• Coleman, Mark (2005) PLAYBACK: From the Victrola to MP3, 100 Years of Music, Machines and Money, Published by Da Capo Press (ISBN 0306813904)