Of Silver Spring, Maryland, passed away on January 30, 2016 at Suburban Hospital following a stroke while working at the National Institutes of Health (NIH). Mary was born on October 30, 1948 in East Stroudsburg, PA to her parents Lester and Hilda Dimmick. After graduation from East Stroudsburg High School, Mary attended St. Luke”s School of Nursing in Bethlehem, PA becoming a Registered Nurse upon graduation in 1969. During her almost 50 years as a nurse, Mary spent the last 26 years working at NIH in Bethesda, MD where her professionalism and concern for the welfare of her patients made a difference in countless lives. Mary was a force to be reckoned with and anyone who met her quickly grasped her no nonsense and direct approach, indicative of her character, values, and intellect. She was fiercely protective of her children and those she loved, while showing the grace, generosity, and compassion to care for others. Mary was passionate about her dogs and loved the mountains and water. She spent countless days and vacations at her cottage on the Severn River. One of her favorite activities was kayaking during the summer with her dogs, friends, and family. Mary will be missed by her beloved dog Lucy. She is survived by her three sons, John (wife Kelly), Matthew (wife Precious), and Peter (wife Kristine), four grandchildren, and three step-grandchildren. A memorial service will be Wednesday, February 3, 2016 at 11 a.m. at Collins Funeral Home, 500 University Blvd West, Silver Spring, MD. Family will meet with friends 30 minutes prior. Mary”s three sons will conduct a private interment ceremony in accordance with her wishes. In lieu of flowers, memorial contributions may be made to lab-rescue.org.