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29 Feb 1960
The first Playboy Club opened in Chicago.
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15 Mar 1937
Dr. Bernard Fantus and his team opened the very first 'blood bank' in Cook County Hospital, Chicago, US.
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19 Jan 1935
Coopers Inc. started selling the world's first men's briefs in Chicago.
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14 Feb 1929
The Saint Valentine's Day Massacre took place in Chicago.
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2 Feb 1925
The first Sears retail store opened in Chicago.
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24 Mar 1883
The first telephone call was made between New York and Chicago.
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8 Jun 1869
The sweeping machine (vacuum cleaner) was patented in Chicago, US, by Ives W. McGaffey.
