» Antlion Pit: "Medieval Bestiaries and the Birth of Zoology"    Article about the relationship between medieval bestiaries and modern zoology.    http://www.antlionpit.com/aura.html

» Zoo and Aquarium History    The Bartlett Society offers historical articles discussing the Tower Menagerie, the Cincinnati Zoo, the Philadelphia Zoo, and the Washington Park Zoo.    http://www.milwaukeezoo.org/bartlett_society.html

» Zoos in Australia    Traces the history of zoos and discussing the role of zoos in Australia today.    http://www.cultureandrecreation.gov.au/articles/zoo/

» Zoos: A Historical Perspective    Online exhibition by the National Zoological Park Library, Smithsonian Institution.    http://www.sil.si.edu/ondisplay/zoos/