He and his family moved from a three-bedroom home to a four-bedroom home, about a half-mile away, in River Forest, Ill.

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But Robert Sheridan, a veteran developer and investor of River Forest, Ill.

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The flat-roofed, rectangular glass house, with white travertine marble floors and decks, floats elegantly on steel supports along the banks of the Fox River in Plano, Ill.

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