Abstract
This essay looks at the historical significance of an APS classic paper that is freely available online:Motley HL, Cournand A, Werko L, Himmelstein A, and Dresdale D. The influence of short periods of induced acute anoxia upon pulmonary artery pressures in man. Am J Physiol 150: 315–320, 1947 ( http://ajplegacy.physiology.org/cgi/reprint/150/2/315 ).