George Jack Heiserman

Jack was born October 1, 1927, to George J and Marie (Helmer) Heiserman in Belle Fourche, South Dakota. He passed away on Friday, August 14, 2026, at Prairie Meadows Senior Living Center in Kasson, MN surrounded by his family.

Jack attended Spearfish Lab Elementary School in Spearfish, SD. In 1946, he graduated from Spearfish High School. Jack then enlisted in the United States Army Air Force and served from the fall of 1946 until the spring of 1948. He then worked the family ranch from 1948 to 1969. Jack ran a dairy operation on the ranch for 15 years. He later farmed acreage and raised beef cattle and sheep.

Jack and Averyl (Dusty) Leslie were married May 31, 1953, in the First Baptist Church in Deadwood, SD. They resided on a ranch on Redwater River in Spearfish, SD. They were blessed to share over 68 years of married life together before Averyl's passing in 2021.

Jack and Averyl moved to Owatonna in 1969 and then to their farm in Kasson in 1974. Jack was employed at Owatonna Tool Company (OTC) until his retirement in 1990. At OTC, Jack worked in the tool crib and later on the hammers. In 2009, they moved from the farm to Kasson.

Jack was a member of the First Presbyterian Church in Kasson, MN. He was a man with a strong work ethic and was always willing to help a friend or neighbor. Jack was devoted to his family and was an amazing role model of a parent - filled with love, pride, and compassion. Over the years, he was a key caregiver for his son and family, and his wife, Averyl. Jack was a talented wood worker who built the family's first house in SD and later a cabin for Dusty's teapots on the farm near Kasson as well as numerous wood projects that he lovingly gave to family and friends. Jack loved the Black Hills, which was always home to him. He enjoyed many trips over the years to visit friends and family. He was also an avid dog lover and greatly missed his devoted dog, Toby.

Jack is survived by his children, Les, Spearfish, SD, Grace (Wayne) Steele, Owatonna, Jim, Kasson, MN, and JeanE (Gary) Brannon, Owatonna; nine grandchildren; 16 great-grandchildren; four great-great-grandchildren; and nephew David (Judy) Rockwell and family, Beaufort, SC.

Jack is preceded in death by his wife, Averyl (Dusty); parents; sisters, Katie & Jim Gardner and Jane & Rock Rockwell; niece, Libby Rockwell; daughter-in-law, Mary Heiserman; and granddaughter, Lisa Hanson.

A memorial service for Jack will be held at 11:00 A.M. on Tuesday, August 25th, 2026 at Czaplewski Family Funeral Homes in Kasson (801 7th ST SE Kasson, MN) with visitation one hour prior to the service at the funeral home. Burial with military honors will be held at Rose Hill Cemetery in Spearfish, South Dakota at a later date.

Memorials can be made to donor's choice.

Blessed be his memory.