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Photograph

Keystone Driller

Date: 1929
Description: A size 5 1/2 Joplin Special clutch hoist labeled "Keystone Driller Co." is powered by a McCormick-Deering engine and sits on display at the International P...
Photograph

Power Units at Schwab & Company

Date: 1941
Description: Men work in the meat processing room at Schwab & Company where machinery is powered by two International PA-50 power units and one PA-100 unit.
Photograph

Wagoner Plant Operations

Date: 1979
Description: Engine in a factory. A man and woman are in the background.

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