Dr. Jean Lintermans came to Seattle in 1962 from his general pediatric residency at the University of Iowa. He worked with us in clinical pediatric cardiology and in our animal physiology laboratory for the next three years. He was the most productive individual in the history of our training program, publishing seven papers in those three years, four clinical papers and three involving pulsed ultrasonic flowmeters and implanted ultrasonic displacement devices in animals. The work, from laboratory to publication, was always done with the utmost attention to accuracy, and was well developed conceptually. Although English was not his native language, Jean's mastery of English was not only excellent, I felt that he actually communicated better than many of our native physicians. During the past year, I was delighted to learn that Jean was preparing a textbook on pediatric echocardiography with Dr. van Dorp, and was even more pleased to be asked to write a foreword .. However, the greatest pleasure came from actually reading this book, and finding that it does indeed have a unique approach, and with the additional genuine benefit to the reader of a thorough, consistent, segmental approach to the diagnosis of congenital heart disease.