Don J. Koss, 95, of Guttenberg, completed his earthly journey on May 10, 2025, at the Guttenberg Care Center surrounded by his loving family. To honor Don’s life, a memorial service will be held at 11 a.m. on Friday, May 23, at St. Paul Lutheran Church, Garnavillo, with Pastor Gary Hatcher officiating. Family and friends of Don’s are invited to join in fellowship from 9 to 11 a.m. prior to the service at the church.