Arkivism
Untitled photo, possibly related to: Part of a micro-projection setup used by Professor Peterson of the Soils and Agronomy Department used in studying soil structure. The emulsified soil particles are in the glass container under the microscope. Iowa State College. Ames, Iowa
Public domain

Untitled photo, possibly related to: Part of a micro-projection setup used by Professor Peterson of the Soils and Agronomy Department used in studying soil structure. The emulsified soil particles are in the glass container under the microscope. Iowa State College. Ames, Iowa

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: Part of a micro-projection setup used by Professor Peterson of the Soils and Agronomy Department used in studying soil structure. The emulsified soil particles are. 1942-01-01. Delano, Jack. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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