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Doctor Christopher: Two Prudential Plaza
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Doctor Christopher: Chicago: Lakeview (Clark & Roscoe)
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Doctor Christopher: Two Prudential Plaza
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Doctor Christopher: Prudential Plaza
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Doctor Christopher: Prudential Plaza
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Doctor Christopher: Chicago
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Doctor Christopher: Prudential Plaza
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Doctor Christopher: Prudential Plaza
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Doctor Christopher: Downtown Chicago
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Doctor Christopher: Willis Tower (Sears Tower)
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Doctor Christopher: Chicago
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Doctor Christopher: Chicago
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Doctor Christopher: Chicago- near Chinatown
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Doctor Christopher: Chicago skyscrapers
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Doctor Christopher: Chicago
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Doctor Christopher: Chicago
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Doctor Christopher: Chicago/Illinois Power Lines
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Doctor Christopher: Chicago Skyscrapers
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Doctor Christopher: Chicago and Chicago Streetlights
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Doctor Christopher: Chicago
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Doctor Christopher: Chicago
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Doctor Christopher: Prudential Plaza
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Doctor Christopher: Aon Center
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Doctor Christopher: Prudential Plaza