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10 résultats pour : early 1900s department of agriculture

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Alice Evans in Dairy Division, Department of Agriculture who studes microscopic organisms and their relation to health, flavor and keeping qualities of dairy products ca. between 1913 and 1918
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Alice Evans in Dairy Division, Department of Agric...

Rice experiment, Department of Agriculture ca. between 1918 and 1928
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Rice experiment, Department of Agriculture ca. be...

Rice experiment, Department of Agriculture ca. between 1918 and 1928
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Rice experiment, Department of Agriculture ca. be...

Cosmetics being tested by a worker at the Department of Agriculture circa 1937.
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Cosmetics being tested by a worker at the Departme...

Government worker from the Department of Agriculture testing cosmetics circa 1937 .
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Government worker from the Department of Agricultu...

Experts of the U.S. Department of Agriculture, working with the United States Gold Association, have combined an insecticide with a green dye circa 1938 (spraying greens) .
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Experts of the U.S. Department of Agriculture, wor...

The department of Agriculture is making tests everyday in order to get cosmetics under the Pure Food and Drug Act, Mrs. C.W. West seated is helping Mrs. R. Goodman make a test on cold cream and other ...
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The department of Agriculture is making tests ever...

Department of Agriculture experts test power of gas to keep weeds out of golf greens circa 1938.
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Department of Agriculture experts test power of ga...

Testing cosmetics at Department of Agriculture Washington D.C. July 10. Dr. D.C. Grove, of the Dept. of Agriculture is shown giving a shakedown test of different creams circa 1937.
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Testing cosmetics at Department of Agriculture Was...

Blindfolded man and woman are part of a Meat testing experiment at the U.S. Department of Agriculture circa 1936.
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Blindfolded man and woman are part of a Meat testi...