Louis H. Diamond (1929-2021) lived a long and blessed life, married to Marilyn for over 65 years, devoted father to Bill, Deana, and Scott. Louis had 12 grandchildren and 4 great grandchildren. He earned a PhD from the University of Illinois, making notable discoveries in hydrazine chemistry. He served a long career in the chemical process industry in Princeton, NJ and Tulsa, OK. Widely active in the Tulsa community, he served as the President of Temple Israel and Zarrow Pointe. He is remembered for his deep knowledge in politics, science and history, along with a warm sense of humor and optimism for the future.