Images not listed below are believed to be in the public domain.
Cover: National Library of Medicine (NLM), National Institutes of Health (NIH), B016393
Page 4: Figure 1.A. Courtesy of the Kinyoun Family Archives private document collection
Page 4: Figure 1.C. Courtesy of the Kinyoun Family Archives private document collection
Page 4: Figure 1.D. Courtesy of the Kinyoun Family Archives private document collection
Page 4: Figure 1.E. NLM, NIH
Page 6: Figure 2. Courtesy of the Kinyoun Family Archives private document collection
Page 7: Figure 4. NLM, NIH, A016364
Page 10: Figure 7. NLM, NIH, B08998
Page 11: Figure 8. Professor “Fred” Dennis. NLM, NIH, B05083
Page 11: Figure 8. Preston Heath Bailhache. NLM, NIH, B08998
Page 11: Figure 8. Professor Austin Flint. NLM, NIH, B07886
Page 13: Figure 9. Public Health Service (PHS)
Page 14: Figure 10. NLM, NIH, A018683
Page 14: Figure 11. Google satellite photograph, 2010
Page 15: Figure 13. PHS
Page 16: Figure 14. Photograph courtesy of the NIH
Page 18: Figure 15. PHS
Page 20: Figure 16. Henry Downes Geddings. NLM, NIH, B012750
Page 20 Figure 16. Milton Joseph Rosenau. NLM, NIH, B022854
Page 21: Figure 17. Robert Koch. NLM, NIH, B016700
Page 21: Figure 17. Emil von Behring. NLM, NIH, B01441
Page 21: Figure 17. Louis Pasteur. NLM, NIH, B020570
Page 23: Figure 18. Library of Congress, Prints & Photographs Division, LC-DIG-hec-13557
Page 23: Figure 19. Photograph courtesy of the NIH
Page 29: Figure 20. Library of Congress, Paper Print Collection, H30730
Page 32: Figure 21. San Francisco Call, 1900
Page 46: Figure 22. Courtesy of the Kinyoun Family Archives private document collection
Page 47: Figure 23. NLM, NIH, B016393