Public domain
Starch from sweet potatoes is latest. Washington D.C. June 28. After three years of chemical research and commercial starch production, the Bureau of Chemistry and Soils of the U.S. Department of Agriculture has discovered a method of manufacturing starch from sweet potatoes; the resultant product b
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Credit lineStarch from sweet potatoes is latest. Washington D.C. June 28. After three years of chemical research and commercial starch production, the Bureau of Chemistry and Soils of the U.S. Department of Agri. 1937-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
