Robert Parrish Nelson, 79, of Mechanicsburg passed away peacefully Friday morning, December 15 from complications from Parkinson's disease. Born in Binghamton, NY, he was the son of the late Kenneth and Bertha (Neild) Nelson. Bob is survived by his children Jennifer of Lititz, PA, Pamela of Short Hills, NJ, Rebecca of New York, NY, and Michael of Jersey City, NJ; and ten grandchildren. In addition to his parents, he was predeceased by his sister Judi. Bob graduated from Oklahoma State University and started his career with Texas Instruments. He spent 30 years with IBM before starting his own company, Professional Resource Group (PRG) in Mechanicsburg. He retired in 2006 with the sale of his business and enjoyed travel, golfing and family. Bob was an avid golfer and member of the Country Club of Harrisburg, where he enjoyed many years of comradery with members, friends and family alike. He enjoyed bowling, a sport he toured with in his high school and early college years and stayed with through his life. Aside from spending time with his children and grandchildren, Bob also had a passion for cars – from racing them to building them. He proudly won Senior Division at the AACA Eastern Fall Meet in Hershey in 2016 for his 1971 Dodge Challenger – an undertaking he relished from start to finish with a team he respected and enjoyed. Please join Bob's family for a Celebration of Life service to be held on Friday, December 22, 2017 at 11:30 AM at the Country Club of Harrisburg, 401 Fishing Creek Valley Road, Harrisburg, PA 17112, where the family will begin receiving guests at 11:00 AM. Reception to follow. In lieu of flowers the family asks that you kindly make a donation to the Parkinson's Foundation at www.parkinson.org in Bob's name.