Smith, John A. Ryder Memorial Hospital/ an unfolding story of health care by John A. Smith. - Humacao, Puerto Rico: Ryder Memorial Hospital; 1989. - xiv, 241 p. ill., port. 22 cm. Includes index. ISBN: 089139043X Subjects--Topical Terms: Hospitals--History.Medical care--Puerto Rico. Subjects--Geographic Terms: Puerto Rico--History.