"The History of Medical Informatics in the United States" is a comprehensive professional book that provides a detailed chronological record of significant events in the history of medical informatics. It examines the impact of these developments on direct patient care and clinical research, offering a representative selection of published contributions to this field. The new edition of the book reflects the transformation that medical informatics has undergone since 1990. While earlier systems were primarily institutionally driven, today, systems from clinical specialties, nursing, pathology, clinical laboratories, pharmacy, and imaging are also significant. The focus is on the individual, whose health is to be supported by these systems. The book has been revised by a group of internationally recognized authors led by Dr. Marion Ball, who has closely collaborated with Dr. Collen. This careful editing has resulted in one of the most comprehensive representations of the history of medical informatics and provides readers with a glimpse into the future development of the field.