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Untitled photo, possibly related to: Samples of bacteria colonies in milk. Sample on right was made before pasteurization and that on the left after pasteurization. Samples were used in bacteriology class of the Dairy Industry Department to show that not all bacterial colonies are destroyed in paste
Public domain

Untitled photo, possibly related to: Samples of bacteria colonies in milk. Sample on right was made before pasteurization and that on the left after pasteurization. Samples were used in bacteriology class of the Dairy Industry Department to show that not all bacterial colonies are destroyed in paste

Delano, Jack · 1942-01-01 · photo, print, drawing

From the collection of Library of Congress. Free to download, adapt and use — no permission needed.

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iowasafety film negativesstory countyamesunited states
Credit lineUntitled photo, possibly related to: Samples of bacteria colonies in milk. Sample on right was made before pasteurization and that on the left after pasteurization. Samples were used in bacteriology c. 1942-01-01. Delano, Jack. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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