31. Letter from Wilbur A. Sawyer to Margaret Sawyer

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32. Letter from Wilbur A. Sawyer to Margaret Sawyer

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33. Letter from Wilbur A. Sawyer to Margaret Sawyer

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34. Letter from Wilbur A. Sawyer to Margaret Sawyer

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35. Letter from Wilbur A. Sawyer to Margaret Sawyer

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36. Letter from Wilbur A. Sawyer to Margaret Sawyer

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37. Letter from Wilbur A. Sawyer to Margaret Sawyer

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38. Letter from Wilbur A. Sawyer to Margaret Sawyer

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39. Letter from Wilbur A. Sawyer to Margaret Sawyer

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40. Vaccination against Yellow Fever with Immune Serum and Virus Fixed for Mice

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