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Photograph

Micro-Photography in IH Engineering

Date: 1944
Description: William Koppa uses a microscope to examine a specimen of steel. The original caption reads: "Micro-photography is employed at International Harvester's Gas...
Photograph

Biologist at Work

Date: 1938
Description: Superintendent of Biology Edward "Doc" Schneberger, who is wearing a long white coat, is sitting on a stool and looking through a microscope at a small tab...
Photograph

American Optical Company

Date: 03 15 1954
Description: Elevated view of technicians working at the American Optical Company located on 429 State Street. Men are standing and sitting at several work stations to ...

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