Larry was born in Independence, Missouri to Robert "RC" and Virginia "Pat" (Sadler) Cook. He graduated from Blue Springs High School in 1959. He retired as a Master Sergeant after 20 years of service in the United States Marine Corps.
Larry worked at Hallmark Cards as an IT Manager for 12 years. He also worked as an adjunct instructor at Johnson County Community College teaching computer language for 30 years.
He was an avid motorcycle enthusiast. He raced motorcycles in his early 20s and rode a street bike until his early 70s. Larry was able to fully retire at age 50. He and his wife, Jan, traveled the country in their RV attending bluegrass festivals, sprint car races and snowbirding in Florida. Music was a big part of Larry's life. He played in his high school band and the USMC Band (playing in two Rose Bowl parades). After retirement, he began playing the upright bass and played in a bluegrass band.
Larry was an Honorary Warrior in the Tribe of Mic-O-Say. When his son, Michael, was in the Boy Scouts, Larry played an active role. Also, Larry was a longtime member of the Fellowship Church of Raymore where he served as a member of the gospel band.
Larry was preceded in death by his parents, RC and Willetta (Adams) Cook. He is survived by his wife of 58 years, Jan; two children, a daughter, Tracy (Doug) Ruggles and a son, Michael (Melissa) Cook; six grandchildren, Andrew, Bryce, Shane, Trynlee, Teddy and Ty; a sister, Virginia (Joe) Hall; and two brothers, Will (Colleen) Cook and Perry (Stacie Brink) Cook.