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Filter: Subject of Work
Filter: Subject of microscopes
Filter: Subject of manufacturing industries
| Date: | 06 27 1937 |
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| Description: | Milwaukee Works factory employee using a microscope to inspect diesel engine pump parts. |
| Date: | 1944 |
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| 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... |
| Date: | 1943 |
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| Description: | A man using a microscope to match a ball bearing for an aircraft torpedo at an International Harvester factory. The original caption reads: "A powerful mic... |
| Date: | 03 15 1954 |
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| 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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