100. Irrigation Pumping in Colorado, May 1928
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Correspondence, project outline, and associated materials related to the cooperative field study "Pumping for Irrigation and Drainage in Colorado" proposed by Ralph Parshall. Materials include letters related to the search for a field assistant, the hiring of William E. "Bill" Code as a field assistant for pumping study, and an Arizona Agricultural Experiment Station Bulletin No. 99, "Motor Driven Irrigation Pumping Plants and the Electrical District" (March 15, 1924) by G. E. P. Smith.