Park dropped out of high school at age 17 and enrolled at the Otis Art Institute in Los Angeles. The following year he settled in San Francisco. In 1930 he became an assistant to Ralph Stackpole and worked with him on the monumental stone figures in front of the SF Stock Exchange. During the Depression he executed mural commissions for the Federal Art Project. With a family to support, in 1935 he took a teaching job at the WInsor Girls School in Boston where he remained until 1941 and then returned to SF. In 1944 he began teaching at the CSFA and in 1955 he joined the faculty at UC Berkeley. Park maintained a rustic home in the Berkeley hills until his death of cancer on Sept 20, 1960. His work progressed through several periods: realistic genre scenes (1920s), Cubism ('30s), Abstract Expressionism ('40s), and the richly painted figurative works ('50s) for which he is best known.