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Seabury C. Mastick

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Seabury Cone Mastick (July 19, 1871 – August 21, 1969) was an American lawyer and Republican politician from New York. Born in San Francisco, he was adopted by his uncle Seabury L. Mastick after his parents died. He studied at Oberlin College (AB 1891; AM 1894) and earned a law degree from UC Hastings in 1894. He practiced law in San Francisco until 1896, then moved to Pleasantville, New York, and later worked in patent law in New York City. He married Agnes Eliza Warner in 1896; after her death he married Kathrin Cawein in 1964. Mastick served in the U.S. Navy from 1917 to 1920, rising to lieutenant commander and helping develop illuminating artillery shells; he received the Citation Star and the Conspicuous Service Cross in 1923. He also led chemical business efforts as president of Westvaco Chlorine Products (1922–1927). In public service, he served in the New York State Assembly (1921–1922) and the State Senate (1923–1934). He chaired the New York State Commission for the Revision of the Tax Laws (1930–1938) and was appointed Supervisor of the Town of Mount Pleasant in 1940. He received honorary degrees from Pacific University (D.Sc., 1952) and Wagner College (LL.D., 1953). He died in Manchester, England, in 1969 while on vacation.


This page was last edited on 2 February 2026, at 14:30 (CET).