Born in Ohio on May 13, 1887. Koester settled in Los Angeles in 1906. For many years he worked as an artist for the W. J. Morgan Company. He died in Alhambra, CA on Sept. 9, 1965. Exh: Painters & Sculptors of LA, 1935.
Source: Edan Hughes, "Artists in California, 1786-1940"
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