Winternitz, M. C. (Milton C.). “Fig. 8: Low Power Photo-Micrograph of Section of Lung from a ‘2-Day Dog’ Stained for Fibrin. Fig. 9: Higher Magnification of Field in Fig. 8.” Collected Studies on the Pathology of War Gas Poisoning. New Haven, Connecticut: Yale University Press, 1920. https://digital.sciencehistory.org/works/ft848q79c.