This note describes an account book designed for the use of physicians, from the late 19th century. In addition to financial records, the book provides space for recording details of the medical problem, prescribed treatment, patient condition, and other matters of concern to the doctor. Records were to be kept for each patient, with supplemental entries by type of case. The book represents an early attempt to provide a total information system for the user; a system in which all necessary information would be available without reference to other material.