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Calvin A. Koistinen, age 90, of Lake Norden, SD, passed away on Tuesday, March 17, 2026, at Avantara Lake Norden. Funeral Services will be at 2:00 p.m. on Saturday, March 21, 2026, at Old Apostolic Church in rural Lake Norden, SD.
Visitation will be at the church in Lake Norden on Saturday starting at 1:00 p.m.
Burial will be at Apostolic Lutheran Cemetery in rural Lake Norden, SD.
Calvin was born on November 15, 1935, in Lake Norden; Calvin was the son of Abraham Koistinen, who emigrated from Finland, and Esther Efraimson of America.
Calvin attended school in Lake Norden through the 8th grade. He spent his entire life on the family farm, where he worked and tended to his cattle. Calvin also frequently worked for other area farmers throughout his career.
After his father’s passing in 1954, he remained on the farm to care for his mother until her death in 1979. Calvin also provided a home and care for his aunt Sophie until her passing in 1966. In May of 2018, Calvin transitioned from the farm to Assisted Living in Lake Norden.
Calvin found great peace in reading, taking long walks, and simply looking up at the moon. He was a member of the Old Apostolic Lutheran Church (OALC).
Calvin was preceded in death by his parents, Abraham and Esther; his brother, Edward Koistinen; and his sisters, Irene Fisk and Elaine Almusa.
He is survived by his sister, Lorraine Almusa of Margo, Saskatchewan, Canada, and many friends and neighbors in the Lake Norden area.
Arrangements by Crawford-Osthus Funeral Chapel www.crawfordosthus.com Watertown and Hayti
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