TUCK, Helen J. Age 83, a longtime resident of La Crescenta, passed away May 11, 2010 in Palmdale. She was born May 10, 1927 in Goderich, Ontario, Canada. Mrs. Tuck worked in administration for the Theoretical Physics Department at CalTech for 30 years. She is survived by her son, Thomas C. Tuck; daughter-in-law, Marianne A. Tuck; and grandson, Michael E. Tuck. Preceded in death by her dear husband, Gordon H. Tuck; and son, Donald G. Tuck. A memorial service will be held on May 22, 2010, at 1:00 p.m., at Eternal Valley Memorial Park Mortuary, in Newhall.