alb3178029

Chicago, Illinois: September 4, 1930 The 'sun-flash beacon' atop the new LaSalle-Wacker building. The eight parabolic mirrors are five feet tall and three feet wide and magnify and reflect the sun's rays during the day and red neon lights at night. © Underwood Archives / The Image Works

Chicago, Illinois:    September 4, 1930 The 'sun-flash beacon' atop the new LaSalle-Wacker building. The eight parabolic mirrors are five feet tall and three feet wide and magnify and reflect the sun's rays during the day and red neon lights at night.   © Underwood Archives / The Image Works.
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Title:
Chicago, Illinois: September 4, 1930 The 'sun-flash beacon' atop the new LaSalle-Wacker building. The eight parabolic mirrors are five feet tall and three feet wide and magnify and reflect the sun's rays during the day and red neon lights at night. © Underwood Archives / The Image Works
Caption:
Chicago, Illinois: September 4, 1930 The 'sun-flash beacon' atop the new LaSalle-Wacker building. The eight parabolic mirrors are five feet tall and three feet wide and magnify and reflect the sun's rays during the day and red neon lights at night. © Underwood Archives / The Image Works
Credit:
Album / Universal Images Group
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Image size:
4800 x 3805 px | 52.3 MB
Print size:
40.6 x 32.2 cm | 16.0 x 12.7 in (300 dpi)