Winternitz, M. C. (Milton C.). “Fig. 5: Pneumonia Beginning as Small Discrete Nodules around Bronchioles Which Contain Plugs of Exudate. Fig. 7: Micro-Photograph of Small Abscess in Lung of Dog Dying 10 Days after Exposure.” Collected Studies on the Pathology of War Gas Poisoning. New Haven, Connecticut: Yale University Press, 1920. https://digital.sciencehistory.org/works/jm214p31z.