Jack is survived by his two sons Jim Knox, his wife Linda and their two children Cooper and Cora of Dallas Mike Knox, his wife Raquel and their three children, Parker, Colton, and Mackenzie of Austin and his two sisters Janet Thompson (Steve) and Joyce Speer (Dave - deceased). Jack and Deanne were married for 51 years until her passing in 2014. Jack was a thoughtful, caring, generous person who will be dearly missed. Jack was a very devoted husband, dad, and grandpa. In retirement, Jack made annual summer trips back to Iowa to check on his farmland, visit Lake Okoboji, participate in the RAGBRAI bike ride, and spend time with family and friends. He watched and cheered for anything involving the Cyclones. Besides his family, Jack's biggest passion was his beloved Iowa State Cyclones. Jack loved playing bridge, researching his genealogy and drinking beer with friends. Jack and Deanne bred and showed champion English Bulldogs while living in Minnesota. Jack had many diverse hobbies over his lifetime. Jack was an active member of Shepherd of the Hills Lutheran Church and later, All Saints Presbyterian both in Austin. While at 3M, Jack was inventor or co-inventor on nine U.S. In 2001, Jack retired from 3M after 32 years. In 1986, Jack's job at 3M relocated them to Austin where they lived the rest of their lives. From 1968 to 1985, Jack and Deanne resided in White Bear Lake and Stillwater, Minnesota where they raised their two sons.

In 1968, Jack completed a Master's Degree in Mechanical Engineering from ISU and soon after started a career with 3M Company. In 1967, Jack and Deanne returned to Iowa State for graduate school. Jack ultimately achieved the rank of Captain. They were stationed at Redstone Arsenal in Huntsville, Alabama. After briefly working at Lockheed Missiles and Space in Sunnyvale, California, Jack was called for active military duty in the Army.

On May 25, 1963, he married Deanne Louise Stenstrom in Des Moines. At ISU he was a member of Phi Kappa Tau Fraternity and ROTC. After high school, Jack attended Iowa State University where he majored in Mechanical Engineering. He graduated as valedictorian of his 20 person class at Gillette Grove Consolidated School. Jack grew up on a farm in Gillette Grove, Iowa. Jack was born on February 8, 1942, in Emmetsburg, Iowa, the son of George and Dorothy (Anderson) Knox. Austin - George 'Jack' Knox, 80, of Austin, Texas died Monday, Main Austin.

Jack knox dallas