Date: | 1928 |
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Description: | Dairyman conducting Methylene blue test on a can of milk. Notice in background reads: "For all milk which passes the quality requirements of this factory, ... |
Date: | 1921 |
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Description: | Man butchering a hog, which is hanging on a meat hook. |
Date: | |
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Description: | Man in boots and a hard hat dresses butchered pigs on meat hooks. |
Date: | 1931 |
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Description: | Two students work in the nutrition lab at the University of Wisconsin-Madison. |
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