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Typed information on back of photograph: Emma Dean Powell (nee Harriet Emma Dean) wife of Major John Wesley Powell. Chicago, Illinois. 1869. Photo credit: National Park Service, Photographic Library, Washington, D.C. Published as Emma Dean Powell (nee Harriet Emma Dean) wife of Major John Wesley Powell on page 5 in the U.S. Geological Survey General Information Product, John Wesley Powell: soldier, explorer, scientist (1970).
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Handwritten information on back of mounted photograph: USGS Exhibit, Chicago Exposition, 1893. No index card.
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This data set contains the result for inorganic constituents and organic compounds collected from tapwater locations, as well as water filtration plants, in East Chicago, Indiana, and Chicago, Illinois in 2017. Additionally quality assurance data collected was summarized. Residential samples collected were done so directly from residential kitchen taps (faucets) as is, it was noted if a point-of-use filtration device was utilized by the homeowner, but they were not removed for sampling. Samples were collected at various times of the day, without regard to previous water use. Results were analyzed using ToxCast, and Exposure Activity Ratios (EARs) are presented. Water filtration plant samples were taken from Lake...


    map background search result map search result map Mixed Organic and Inorganic Tapwater Results in the Greater Chicago Area, USA, 2017-2019 Mixed Organic and Inorganic Tapwater Results in the Greater Chicago Area, USA, 2017-2019