Public domain
Public Health Surgeon. Dr. Charles Armstrong, Public Health Surgeon and Specialist on virus diseases, photographed in the laboratory in Wash. D.C. 10/29/35
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
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Credit linePublic Health Surgeon. Dr. Charles Armstrong, Public Health Surgeon and Specialist on virus diseases, photographed in the laboratory in Wash. D.C. 10/29/35. 1935-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
Similar works
Dr. Charles Armstrong, U.S. Public Health, file
Microscope?
Scientific instruments?
Man using microscope in laboratory
![...] to test the contents [...] value. [Agri]culture is after a better [...] photo shows some of the [...] being made to determine [...] hens lay the better eggs, and if eggs can be bettered by cross-breeding the chickens](https://thumbs.arkivism.com/loc-2016878130.jpg)
...] to test the contents [...] value. [Agri]culture is after a better [...] photo shows some of the [...] being made to determine [...] hens lay the better eggs, and if eggs can be bettered by cross-breeding the chickens
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