OK, I did manage to dig up some more info:
The book 'Chicago Whispers' mentions extensive coverage by the Defender at the time of filming, in part:
'Chicago's Northside was one of the principal locations for shots of the movie', the Defender wrote on July 11, 1960. 'In true Chicago fashion, the white residents were aghast and for the most part, against the idea.' The paper was referring to
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