Marion Jethro Crowell Jr., 79, of Phoenix, a retired mail carrier, died June 27, 1998. He was born in Cade, Okla., and was a Marine Corps veteran. He also was a member of the National Association of Letter Carriers. Survivors include his wife, Mary Jo (Guthrie); daughter, JoAnn Crowell-Lopez; sister, Beth Berry; two grandchildren; and five great-grandchildren. Visitation: 5 to 8 p.m. Tuesday, Greer-Wilson Funeral Home, 5921 W. Thomas Road, Phoenix. Services: 10 a.m. Wednesday, National Cemetery of Arizona, 23029 N. Cave Creek Road, Phoenix. Contributions: Hospice of the Valley, 2000 W. Bethany Home Road, Phoenix, AZ 85015.