Dr. Jack Allen Charles Kaiser, 89, Springfield, passed away Wednesday, October 29, 2025 in Cox South, Springfield.  He was born November 15, 1935 in Chicago, Illinois, the son of Clarence Charles Kaiser and Minette Boer Kaiser.

He got his PhD at the University of Chicago. He had a love for model trains and trolleys, as well as gardening.

He was preceded in death by Charles Kaiser, Minette Kaiser, Ruth Kaiser, and Craig Luntz.

Survived by Dorothy Kaiser, Cynthia Luntz, Daniel Ferguson Jr., Corey Miller, Tyler Ferguson, Karla Ferguson, Klaire Ferguson, Scott Kaiser, Terri Kaiser, Kelli Kaiser, and Matthew Kaiser.

Memorial services will be held at 11:00 a.m. Wednesday, November 12, 2025 in St. James Episcopal Church, under the care of Gorman-Scharpf Funeral Home. Graveside services with full military honors will follow at 2:00 p.m. in the Missouri Veterans Cemetery.  In lieu of flowers, donations in Jack's name may be made to St. James Episcopal Church.