State Historical Society of Iowa
Courtesy of Library of Congress, Vachon, John, "Stream pollution, Dubuque, Iowa," April 1940
This photograph from 1940 shows a polluted stream in Dubuque, Iowa. Dubuque's main industry was manufacturing, and these large companies lacked proper waste disposal in the city in the 1940s.
Vachon, John, "Stream pollution, Dubuque, Iowa," April 1940. Courtesy of Library of Congress Courtesy of Library of Congress
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