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[Machine at Airport]

Description: Photograph of a machine at an airport in Pittsburgh, Pennsylvania or Charleston, South Carolina. The machine appears to have several tubes that extend into the sky.
Date: August 8, 1952
Creator: Clark, Joe
Partner: UNT Libraries Special Collections

Whiffletree.

Description: Patent for an improvement in whiffletrees, made out of steel. It includes a description and illustration.
Date: April 21, 1891
Creator: Flatau, Louis S.
Partner: UNT Libraries Government Documents Department
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