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Date: 1915 

Description: Certificate issued to E.M. Griffith, the Wisconsin State Forester, so that Griffith could prove that he had flown at an altitude of 1600 feet in the "flyin...

Date: 1976-07 

Description: Diagram showing environmental means by which humans can be exposed to radiation from nuclear power plants.

Date: 1893 

Description: Award certificate presented to the Appleton Woolen Mills at the 1893 Chicago World's Fair. The company won a bronze medal at the Fair for its paper makers...

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Description: Letterhead of Carl Stargardt, bridge contractor in Athens, Wisconsin, with two-color illustrations in brown and green inks of an automobile heading toward...

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Description: Letterhead of the Evinrude Division of Outboard Motors Corporation of Milwaukee, Wisconsin, with the corporation logo and a man racing along in a boat with...

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