Waltham Miss Rita V. Callahan, of Waltham, died Friday, January 26, 2007 at Meadow Green Nursing Home, Waltham. She was 85. Born in Waltham, a daughter of the late Thomas and Mary (Brannelly) Callahan, Rita had been a lifelong resident. She had worked at the Raytheon Company and in later years as a dietary aide at the Fernald Center in Waltham. Rita leaves her sisters, Madeline G. Callahan of Waltham and Marie A. Rooney of Framingham and many nieces and nephews. She was also a sister of the late Thomas Callahan, Margaret Anderson, Ruth Shaw and Mildred Mannix. Relatives and friends are invited to attend the Funeral at 8 a.m. Wednesday from The Joyce Funeral Home, 245 Main Street (Rte. 20), Waltham followed by a Funeral Mass in Saint Marys Church, 133 School Street, Waltham at 9 a.m. Burial will be in Calvary Cemetery, Waltham. Visiting hours are Tuesday from 4 to 8 p.m. Memorial donations may be made to the charity of ones choice.