Hunter, Laboratory Problems in Civic Biology. American Book Company.
Bigelow, Introduction to Biology. The Macmillan Company.
Conn, Bacteria, Yeasts, and Molds in the Home. Ginn and Company.
Conn, Story of Germ Life. D. Appleton and Company.
Davison, The Human Body and Health. American Book Company.
Frankland, Bacteria in Daily Life. Longmans, Green, and Company.
Overton, General Hygiene. American Book Company.
Prudden, Dust and its Dangers. G. P. Putnam's Sons.
Prudden, The Story of the Bacteria. G. P. Putnam's Sons.
Ritchie, Primer of Sanitation. World Book Company.