A private funeral was held Tuesday afternoon at Fourth Presbyterian Church.
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Wirtz passed away last month after a brief illness.
RELATED | Chicago Blackhawks owner Rocky Wirtz dies at age 70 after short illness
The 70-year-old was credited with re-invigorating the franchise, which won three Stanley Cups while he was the owner.
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A public memorial is scheduled to take place Wednesday morning at the United Center.
Fans are asked to enter through the south gates, which open at 9:30am. The program is set to start at 11 a.m.
The event will also be livestreamed on the Blackhawks' website.