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27 résultats pour : early 1900s laboratory

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Two men sitting in what the original caption calls a laboratory
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Two men sitting in what the original caption calls...

Photographie
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Photographie

Photographie
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Photographie

Students' laboratory of microscopic anatomy
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Students' laboratory of microscopic anatomy

Man working in a laboratory
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Man working in a laboratory

Hygiene Laboratory
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Hygiene Laboratory

Man using microscope in laboratory
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Man using microscope in laboratory

Woman scientist in a laboratory ca. between 1909 and 1923
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Woman scientist in a laboratory ca. between 1909 a...

Red Cross laboratory at the front ca. between 1909 and 1920
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Red Cross laboratory at the front ca. between 1909...

Men working at a general analytical laboratory, ... Union Sugar Co. Betteravia, CA ca. 1909
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Men working at a general analytical laboratory, .....

L to R: Miss Lucia McCollock, Miss Mary Bryan, Miss Florence Hedges, The women scientists make cultures of the parasites, create experiments and do all sorts of technical laboratory work ca. 2 January...
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L to R: Miss Lucia McCollock, Miss Mary Bryan, Mis...

Man and woman in laboratory performing duties to obtain sugar from corn ca. between 1918 and 1921
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Man and woman in laboratory performing duties to o...

All-Lebanon Band Performing at Cornerstone
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All-Lebanon Band Performing at Cornerstone

Men and laboratory examining animal cages
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Men and laboratory examining animal cages

Cleaning animal cages
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Cleaning animal cages

Providence Hospital Laboratory
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Providence Hospital Laboratory

Men working in a Laboratory in the Philippines
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Men working in a Laboratory in the Philippines

Miss Elizabeth Funk in laboratory
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Miss Elizabeth Funk in laboratory

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...

1939 - government experiments test the ability to make egg whites different colors.
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1939 - government experiments test the ability to ...

A worker is shown inspecting a roll of film for flaws before it is sent to the laboratory to be printed circa 1937.
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A worker is shown inspecting a roll of film for fl...

U.S. Army Medical School - Workers in lab with Typhoid Vaccine circa 1917.
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U.S. Army Medical School - Workers in lab with Typ...

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

1939 - government experiments test the ability to make egg whites different colors.
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1939 - government experiments test the ability to ...

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...

Man working in a laboratory circa 1936.
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Man working in a laboratory circa 1936.

Man working in Laboratory circa 1935.
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Man working in Laboratory circa 1935.