A memorial gathering will be at 6 p.m. Thursday at Boxwell Brothers Funeral Home, located 2800 Paramount Blvd.
Mr. McMahan was born Sept. 24, 1934, to Joseph and Goldie McMahan. He had a career as a freelance photographer.
Survivors include a son, Clayton McMahan and wife Angie of Amarillo; two sisters, Patsy Hightower of Canyon and Betty Torres of California; and many nieces, nephews and other family members.
Sign the online guestbook at www.boxwellbrothers.com.