Winternitz, M. C. (Milton C.). “Fig. 7: Higher Magnification of Fig. 6. Fig. 9: Section of Lung Showing Alveoli Filled with Hyalinized Fibrin in a 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/ms35t876b.