His wife of 66 years , Sally Gayhart Arnold , had preceded him in death by two months .
Arnold died from natural causes on May 8 , 2008 , in a nursing home in Nashville , seven days before his 90th birthday .
Arnold 's wife of 66 years , Sally Gayhart Arnold , had preceded him in death by two months .
Arnold died from natural causes on May 8 , 2008 , in a nursing home in Nashville , seven days before his 90th birthday .