Books by John Walter Kerr:
Books in the extended shelves:
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Kerr, John Walter, 1871-: The history, development, and statistics of milk charities in the United States (Govt. print. off., 1910), also by United States. Public Health and Marine Hospital Service (page images at HathiTrust)- Kerr, John Walter, 1871-: The prevalence of rabies in the United States. (Government Printing Office, 1909), also by Arthur Marston Stimson (page images at HathiTrust)
Find more by John Walter Kerr at your library, or elsewhere.