Rudolf Frederick Lehnert, 83, passed away September 18th after a short battle with Lymphoma. Born in Munich, Germany, the family lived on Long Island and moved to Princeton in 1937. He graduated from the Lawrenceville School in 1948 and Princeton University in 1952 as an aeronautical engineer. While attending Princeton he was a member of the Ice Hockey and Football teams. His connection to the University continued with a long-term engagement with the Forrestal Research Center; a highlight of this time was an outreach project in 1965 to help establish the Aeronautical Engineering department at the Kanpur campus of the Indian Institute of Technology. Later, Rudy managed the Nassau Delicatessen on Princeton's Palmer Square, the family business established by his parents Fred and Therese Lehnert. His love of sport fishing then led him to the position of VP of Engineering, and later President, of Egg Harbor Yacht Company, and a subsequent role as a consultant to boat owners. Rudy served on the Princeton First Aid and Rescue Squad, was a NAUI-certified SCUBA instructor, ham radio operator, a member of the Princeton Lions Club, the Citizen's Range & Recreation Club of Central NJ, and the National Rifle Association. Rudy was well known for his long-standing connection with Princeton University, which included service as the Webmaster and Treasurer for the Class of 1952, and his enthusiastic support of the University's teams, and as a member of the Princeton Varsity Club. He is survived by his wife Mildred McCool Lehnert, with whom he recently celebrated 60 years of life together, his son John Lehnert, daughters Cheryl Costello and Laurie Horan, grandson Sean Horan, and granddaughter Katie Horan. Calling hours will be at the Mather-Hodge Funeral Home, 40 Vandeventer Avenue, Princeton, 2:00-5:00 PM Sunday September 23rd, and 9:00-11:00 AM Monday September 24th, with a memorial service to follow. Burial will then be at the Princeton Cemetery. In lieu of flowers, donations may be made to the Temple University Hospital Cancer Center 3401 N Broad Street, Philadelphia PA 19140 or Rudy F. Lehnert '52 Memorial Fund PO Box 5357 Princeton, NJ 08540.