Worked at Pine Rest 42 years: age 89,RIP: "Willis Kooiker Obituary - Grand Rapids, MI |" Grand Rapids Press

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Kooiker, Willis Caledonia, MI Willis "Bill" Kooiker, aged 89, went to be with his Lord on Sunday, December 17, 2017. Bill retired from Pine Rest after 42 years of service. He served in the U.S. Army from 1951 until 1953. His brothers, Herman and Jacob; and brothers-in-law, Harvard Rozeboom, Don...."

http://obits.mlive.com/obituaries/grandrapids/obituary.aspx?n=willis-kooiker&pid=187564889&fhid=10156

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