Date: | 02 22 1950 |
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Description: | An example of a pilot plant to remove phosphorus from sewage effluent by engineering professors William L. Lea and Gerard A. Rohlich. |
Date: | |
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Description: | A man is standing on the left next to an outhouse which has been connected to machinery. The caption below reads: "This built in service unit increased our... |
Date: | 1931 |
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Description: | Advertising poster for the "Romance of the Reaper" film for use in Australia. The poster features an illustration of Cyrus Hall McCormick building the firs... |
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