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Brookfield Zoo, or Chicago Zoological Park, is located in a suburb of Chicago, IL. It originally opened in 1934 and was highly regarded for using moats instead of fences to separate the animals from human traffic. In 1982 the zoo began opening the then-largest indoor rainforest exhibit Tropic World. The exhibit would eventually encompass three continents, but only Africa was opened in 1982 featuring the gorilla enclosure with Samson, Alpha, and Babs.
Brookfield Zoo (2020, June 4). In Wikipedia. Retrieved June 20, 2020, from https://en.wikipedia.org/wiki/Brookfield_Zoo
Brookfield Zoo. (n.d.). A History of Tropic World's Gorillas. Retrieved June 20, 2020, from https://www.czs.org/custom.czs/media/CenterAnimalWelfare/Tropic-World-fa...
Brookfield Zoo - Tropic World - "It's A Jungle In There" (Commercial, 1982) [Online video]. (1982). Chicago: The Museum of Classic Chicago Television. Retrieved June 20, 2020, from https://www.youtube.com/watch?v=K9UM95B3tks