U.S. Cellular Corp. (see Telephone & Data Systems Inc. )

U.S. Cellular Field (see Comiskey Park )

U.S. Gypsum Co./USG Corp. (see United States Gypsum Co. )

U.S. Robotics Inc.

U.S. Steel Corp.

Ugandans

Ukrainian Village

Ukrainians

Underground Economy

Underground Railroad

Unemployment

Unicom Corp. (see Commonwealth Edison Co. )

Union Stock Yard

Union Stock Yard & Transit Co.

Union Tank Car Co.

Union, IL

Unionization

United Air Lines

United Biscuit Co. of America

United Center

United Charities

United Neighborhood Organization

United States Gypsum Co.

United Stationers Supply Co.

Universities and Their Cities

University Park, IL

University Presses (see Presses, University )

University of Chicago

University of Illinois at Chicago

Untouchables

Uptown

Urban League

Urban Renewal

Uruguayans