The purpose of this small book is to help in the further reduction of maternal mortality and morbidity by setting up standards of organization in hospitals accepting maternity cases. It is recognized that the problems of the large and small hospitals are different, and these variations are discussed. The standards of organization include accommodations, clinical facilities, organization of the department, clinical records, conferences, care of the newborn and extramural services. It is believed that the standards established, if followed, will aid materially in reducing maternal mortality and morbidity. Among the important subjects considered are the organization of obstetric staffs to control obstetric procedures, the isolation of patients with infections, and standards for sufficient nursing personnel.