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

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

U.S. Robotics Inc.

U.S. Steel Corp.

Unicom Corp. (see Commonwealth Edison Co. )

Union Stock Yard & Transit Co.

Union Tank Car Co.

United Air Lines

United Biscuit Co. of America

United States Gypsum Co.

United Stationers Supply Co.