English: 1893 ad from a Chicago newspaper for "Kirk's Soap". The ad plays on the opening that year of the Yerkes Observatory's 1-meter (40-inch) refracting telescope (the largest of its type in the world), and the idea that Mars was populated with intelligent life.
Date
Source
Contemporary Astronomy â second edition, by Jay M. Pasachoff, published by Saunders College Publishing 1981. ISBN0-03-057861-2
Author
Further attribution given within to "American Institute of Physics, Niels Bohr Library". 1893 ad its self is attributed in text to an unnamed Chicago newspaper.
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2007-06-02 14:22 Halfblue 713×858×8 (120289 bytes) 1893 ad from a Chicago newspaper for âKirkâs Soapâ. The ad plays on the opening that year of the [[Yerkes Observatory| Yerkes Observatories]] 1-meter (40-inch) refracting telescope (the largest of its type in the world), and the idea that [[Mars]] w
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{{BotMoveToCommons|en.wikipedia}} {{Information |Description={{en|1893 ad from a Chicago newspaper for "Kirk's Soap". The ad plays on the opening that year of the Yerkes Observatory's 1-meter (40-inch) refracting telescope (th