Phyllis B. Koskinen passed away September 21, 2016 in Denver, Colorado. Phyllis was born on September 5, 1926 in Bay City, Michigan. She is survived by two daughters: Susan Koskinen Coburn, and husband Dwight; Carolyn K. O'Donnell and husband Bruce; grandchildren: Christopher, Claire, Alexandra Coburn; Elizabeth Arcese; William and Canton O'Donnell; great granddaughter, Lauren Coburn. She is preceded in death by husband, William C. Koskinen and daughter, Martha Ann Arcese. There will be a celebration of her life from 4-6 pm on Saturday, November 19, 2016 at the Overlake Golf and Country Club in Bellevue, Washington. Memorial contributions may be made in Phyllis's memory to the Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue North, Seattle, Washington, 98109 or www.fredhutch.org/en/ways-to-give/honor-memorial.html. Please share memories of Phyllis and condolences with her family in the guestbook below.