On May 15-18, 1961, the 12th Annual Symposium on Spectros copy was held in Chicago. Over the twelve-year history of this meeting, it has continually grown and now ranks as one of the major technical meetings in the field of spectroscopy. The scope of the program itself represents a balance between research applications and control applications, between applied and the more fundamental aspects of spectroscopy. Papers are presented each year in the specialty areas of X -ray, ultraviolet, visible, infrared, Raman, EPR, and NMR spectroscopy. In many instances over the years, excellent work has...