Article Photos: Nonagenarian credits volunteer work for her longevity

Thelma Burton, 91, volunteers at the Metropolitan Better Living Center on Wednesday, June 13, 2012 in Oklahoma City, Okla. Burton won a Salute to Senior Service award this year for her volunteerism. Photo by Steve Sisney, The Oklahoman

Thelma Burton, 91, volunteers at the Metropolitan Better Living Center on Wednesday, June 13, 2012 in Oklahoma City, Okla. Burton won a Salute to Senior Service award this year for her volunteerism. Photo by Steve Sisney, The Oklahoman