Delbert Dean Osborn passed away on Saturday, May 29, 2021 in Oklahoma City, OK at the age of 79. He was born on April 15, 1942 in Elk City, OK to Thomas and Justine (Chamberlain) Osborn. He was a graduate of Stafford High School in 1960 and later went on to graduate from Oklahoma State University School of Technical Training located in Okmulgee, OK in 1964 with a degree in Air Conditioning and Heating. While going to school in Okmulgee he met the love of his life, Thelma Paulsen. They were married on April 18, 1964 in Okmulgee, OK. Delbert had a successful career in Heating, Ventilation, and Air Conditioning for many decades. He was a member of the United Association of Plumbers and Pipefitters Local 344 for almost 55 years. He retired from Four Winds Services, Inc. in 1998 where he worked at the Federal Aviation Administration as a contractor in the Facilities and Maintenance Division. Traveling with his wife was one of his greatest joys. Together they traveled to every state in the United States, Canada, Nova Scotia, Europe, China, Australia, Mexico, Panama, and numerous islands in the Caribbean. During his lifetime, he enjoyed taking his wife, children, grandchildren, and extended family to his place at Lake Tenkiller where they enjoyed boating, swimming, water skiing, tubing, fishing, and shooting fireworks on July 4th. In retirement, he and his wife enjoyed traveling with a couple of local RV Clubs where they made many lasting friendships. He led a fulfilled life accomplishing everything he set out to do work hard, play hard, travel, and retire comfortably. He was preceded in death by his loving wife of 51 years, Thelma; his parents, Thomas and Justine Osborn; his twin brother, Gilbert and his younger brother, James. He is survived by his son, Kevin Osborn and wife Jeana; his daughter, Kimberley Sheppard and husband Alan; five grandchildren, Janae Branscum and husband Matthew, Joshua Osborn, Jaden Osborn, Addison Sheppard, and Bryson Sheppard; and two great grandchildren, Bella Branscum and Blakelyn Branscum. Viewing will be Tuesday, June 1st, 8am-8pm, with family present from 6-8 p.m. at Mercer-Adams in Bethany, OK. Services will be Wednesday, June 2nd at 11 a.m. at New Church with interment at 3:00 p.m. at the Stafford Cemetery in Stafford, OK. Memorials may be made to Salvation Army. . Visitation with Family Present Mercer-Adams Funeral Service Tuesday, June 01, 2021 12:00 PM - 8:00 PM 3925 North Asbury Avenue Bethany, Oklahoma 73008 Viewing will be Noon-8:00pm Tuesday with the Family Present: 6:00pm - 8:00pm Funeral Service Newchurch Wednesday, June 02, 2021 11:00 AM 9201 N. Rockwell Oklahoma City, OK Graveside Service Stafford Cemetery Wednesday, June 02, 2021 3:00 PM Stafford, OK