Professor Jacques Mathyer received the Diploma in Police Science (Criminalistics) in 1946 from the University of Lausanne, Switzerland, and the Diploma in Criminology in 1957. During 1946-1947 he was assistant to Dr. Edmond Locard in Lyons, France, where he received his Doctor of Science Degree from the University of Lyons, 1947. After serving in the police laboratory of Vaud, Lausanne, Switzerland, he served from 1949 to 1963 as assistant to Professor Marc A. Bischoff at Institut de police scientifique et de criminologie of the University of Lausanne. Upon Professor Bischoff's retirement in 1963 he was named Professor and Director of the Institute. Professor Mathyer has participated in both the first and second International Meetings in Questioned Documents (London 1963 and Copenhagen 1966). He is a corresponding member of the American Society of Questioned Document Examiners, a regular member of the Chambre suisse des experts judiciaires techniques et scientifiques, and advisor to the International Criminal Police Organization.-EDITOR.