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Authors
- Nancrede, Charles B. (Charles Beylard), 1847-1921 author1
- Otis, Edward O. (Edward Osgood), 1848-1933 author1
- Putnam, James Jackson, 1846-1918 author1
- Ranney, George E., 1839- author1
- Richardson, Charles Williamson, 1861-1929 author1
- Riley, Charles V. (Charles Valentine), 1843-1895 author1
- University of Pennsylvania. Laboratory of Hygiene, author.1
- Zeit, F. Robert., author1