Mark Hartman Cook, age 73, of McLoud, Oklahoma, passed away on Saturday, August 25, 2018. He was born on July 7, 1945, the fifth of seven children to Thomas and Katherine Cook in Muskogee, Oklahoma. He is survived by his daughter, Marcia Cook Hanna of McLoud; his granddaughters Melissa Hanna and Paige Hanna; his grandsons Marcus Allen Hanna and Jeff Hanna and Jeff's wife, Rusty and his great-grandchildren Haven, Phoenix and Eva. He also leaves behind his brothers Tedford Hugh Cook of Norman, OK and Jonathan David Cook of Columbia, MD and his sisters Nancy Gail Drake and Katherine Womack both of Oklahoma City. He is also survived by his nieces Doratha Vinkemeier of Nottingham, England, Dr. Kathy Cook of Tulsa, Keely Womack of Oklahoma City, Sydney Brannock of Yukon, Nancy Lee Cook of San Jose, CA and Fade Wall of Loveland, CO. He leaves nephews Sam Cook of Anchorage, AK, Thomas Cook and Jonathan Womack both of Oklahoma City. He was also close to and is survived by his cousins, George Hartman of CO and Cindy Bear of Tulsa. He is survived by a number of great-nieces and nephews whom he loved. Mark was preceded in death by his parents and his brothers Thomas Cook of Alaska and William Meister Cook of Columbia, MD. In his youth, Mark attended Bishops College School in Lennoxville, Quebec but returned to Muskogee to finish his high school education and graduated from Muskogee Central High School. While at Muskogee Central, he played football with the Roughers. Upon graduation, he attended the University of Central Oklahoma (Central State) but soon left to join the Marines where he served honorably in Vietnam. Despite the anti-war sentiment of the time, Mark remained constant in his belief the war was just and he was very proud of his service. After leaving the Marines, he moved to Oklahoma City and worked for Purina Dog Chow for a number of years and later worked for Leeway Motor Freight until the company closed. He loved trees and studied horticulture at OSU Tech in Oklahoma City. Together with his Mom, he opened a Christmas tree farm on the family acreage in McLoud. He loved finding trees which were beautiful and well-suited to Oklahoma and soon began raising those as well. Mark was a faithful member of Pecan Valley Baptist Church and loved the fellowship he found there. Mark believed in the promise of Jesus Christ as his Savior. He enjoyed immensely the McLoud Senior Citizens Group and playing dominoes there with his friends. He especially enjoyed family get-togethers, playing cards, fishing, and the out of doors. Mark loved good food and family trips. His most recent family trip was in late July, 2018 to Beaver's Bend State Park and his 73 birthday was celebrated. Mark will be missed by family and friends. The funeral service will be held at Pecan Valley Church at 1:00 PM on Sunday, September 2, with the Reverend Ed Moore presiding. Burial services will be at Dale Cemetery at 11:00 AM on Tuesday, September 4, with military honors.