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| If Only Mrs. O'Leary Had Switched, 1971 |  A String of Endorsements |
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| In 1971 the Chicago Association of Commerce issued a special fire centennial issue of Chicago Commerce magazine celebrating the city's past, present, and future traditions of enterprise. A number of advertisements explicitly entered into spirit of the occasion, including these for Sidney Wanzer & Sons' dairy business and for Prudential Insurance. | |||
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