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University of Illinois at Chicago Century of Progress World's Fair, 1933-1934 (University of Illinois at Chicago)
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Date
ca. 1933-1934 (2)

Creator
Museum of Science and ... (1)

Format
7.25x9 (1)

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"Small units form the back wall and a few chairs for the audience make a small ampitheatre [sic] of General
1. "Small units form the back wall and a few chairs for the audience make a small ampitheatre [sic] of General Electric's Air Conditioning display at A Century of Progress in Chicago. Lectures on the fundamentals of air conditioning are given several times a day."
"When light beams from the star Arcturus were picked up by photoelectric tubes at four observatories,
2. "When light beams from the star Arcturus were picked up by photoelectric tubes at four observatories, signals flashed on this display board on the rostrum of the Hall of Science to the show the audience how the official lighting of A Century of Progress was accomplished."
  
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