Leonard Mandel is the Lee DuBridge Professor of Physics and Optics at the University of Rochester. His research has been in the general area of optical coherence, lasers and quantum optics and it spins both experimental and theoretical work. Several of his many Ph.D. students have become well known in their fields. Professor Mandel was the first recipient of the Max Born Medal from the Optical Society of America in 1982 ; he received the Marconi Medal from the Italian National Research Council in 1987, the Thomas Young Medal from the (British) Institute of Physics in 1989, and the Ives Medal from the Optical Society of America in 1993. He has been on many editorial boards and committees of the American Physical Society and of the Optical Society of America. In 1992 he was a traveling lecturer in India for the International Commission for Optics, and in 1994 he was elected to membership in the New York Academy of Sciences. Emil Wolf is Wilson Professor of Optical Physics at the University of Rochester. His main areas of research are physical optics, electromagnetic theory and optical coherence theory, and he has published many papers on these and other subjects. He is the co-author, with Max Born, of a well-known test, Principles of Optics, and is the editor of an ongoing review series, Progress in Optics, of which 34 volumes have been published to date. Professor Wolf has received numerous awards for his scientific contributions, including the Ives Medal and the Max Born Medal of the Optical Society of America, the Albert A. Michelson Medal of the Franklin Institute, the Marconi Medal of the Italian National Research Council and a Gold Medal of the Czechoslovak Academy of Sciences. He is a past president of the Optical Society of America, an honorary member of the Optical Societies of America, India, and Australia, and has been awarded honorary degrees by the University of Groningen (the Netherlands), the University of Edinburgh (Scotland) and Palacky University (the Czech Republic).