Mr. Thomas and his wife, Betty, were longtime members of the Menlo Park Presbyterian Church and the Peninsula Bible Church.
Born in Medicine Hat, Albert, Canada, Mr. Thomas moved to San Diego with his family as a small child. He received his bachelor's and master's degrees in petroleum engineering from the Colorado School of Mines in 1941. He served in World War II as a meteorologist decoding weather maps on bombing missions with the rank of captain.
He worked for Stanford Oil Company of California (Chevron) for 35 years, retiring as chief geologist and head petroleum engineer. He had a life-long love of rocks, minerals, gems, coins, art, fishing, woodworking and barbecuing, say family members. He made many friends working on projects at Little House, they say.
He is survived by his wife of 64 years, Betty; daughters, Ann Powell, Robin Sweet and Carol Penrose; and eight grandchildren.
Contributions in his name may be made to Mount Hermon, Thomas Campership LIFE Fund/Book of Remembrance, P.O. Box 413, Mount Hermon, CA 95041.