The two books "The Biology of Pneumococcus" and "Pneumonia. With Special Reference to Pneumococcus Lobar Pneumonia" by Benjamin White and Roderick Heffron, respectively, are valuable for those interested in the history of science and medicine, as well as for physicians seeking information on pneumococcal disease. They provide an excellent description of the progress in understanding pneumonia, an important disease in medicine since its discovery in the late 1800s. These books are republished by Harvard University Press and are recommended for their historical and scientific value. "Common Symptoms of Disease in Children," 6th edition by R.S. Illingworth, is a useful reference for general physicians. However, it contains some inaccuracies and controversial statements. For example, Illingworth incorrectly states that laryngotracheobronchitis is commonly associated with Hemophilus influenzae infection, when it is usually caused by a virus. The book is well-written but has some issues with organization and content accuracy. "Diagnosis of Diseases of the Chest," Volume IV, 2nd edition by Robert G. Fraser and J.A. Peter Paré, is a comprehensive reference for chest diseases. It includes differential diagnoses, tables, figures, and predicted values for pulmonary function tests. The book features a unique decision tree system that helps in diagnosing various chest conditions. It is recommended for chest physicians, teachers, and medical students. "Epidemiologic Reviews," Volume 1, edited by Philip E. Sartwell, is the first in a projected annual series of reviews. It covers 11 topics, including Legionnaires' disease, hepatitis, Burkitt's lymphoma, and breast cancer. Each review includes an exhaustive bibliography and is useful for clinicians, microbiologists, and epidemiologists. The book provides critical appraisals of various diseases and their epidemiological aspects, making it a valuable resource for medical professionals.The two books "The Biology of Pneumococcus" and "Pneumonia. With Special Reference to Pneumococcus Lobar Pneumonia" by Benjamin White and Roderick Heffron, respectively, are valuable for those interested in the history of science and medicine, as well as for physicians seeking information on pneumococcal disease. They provide an excellent description of the progress in understanding pneumonia, an important disease in medicine since its discovery in the late 1800s. These books are republished by Harvard University Press and are recommended for their historical and scientific value. "Common Symptoms of Disease in Children," 6th edition by R.S. Illingworth, is a useful reference for general physicians. However, it contains some inaccuracies and controversial statements. For example, Illingworth incorrectly states that laryngotracheobronchitis is commonly associated with Hemophilus influenzae infection, when it is usually caused by a virus. The book is well-written but has some issues with organization and content accuracy. "Diagnosis of Diseases of the Chest," Volume IV, 2nd edition by Robert G. Fraser and J.A. Peter Paré, is a comprehensive reference for chest diseases. It includes differential diagnoses, tables, figures, and predicted values for pulmonary function tests. The book features a unique decision tree system that helps in diagnosing various chest conditions. It is recommended for chest physicians, teachers, and medical students. "Epidemiologic Reviews," Volume 1, edited by Philip E. Sartwell, is the first in a projected annual series of reviews. It covers 11 topics, including Legionnaires' disease, hepatitis, Burkitt's lymphoma, and breast cancer. Each review includes an exhaustive bibliography and is useful for clinicians, microbiologists, and epidemiologists. The book provides critical appraisals of various diseases and their epidemiological aspects, making it a valuable resource for medical professionals.