Palmer, Fuller & Co.

People's Gas Light & Coke Co.

Pepper Construction Co.

Perkins & Will

Pettibone Mulliken Corp.

Phelps, Dodge & Palmer

Pinkerton National Detective Agency

Plano Manufacturing Co. (see International Harvester Co. )

Platinum Technology Inc.

Playboy Enterprises Inc.

Playskool Inc.

Premark International Inc. (see Kraft Inc. )

Premark International Inc. (see Illinois Tool Works Inc. )

Pressed Steel Car Co. (see General American Transportation Corp. )

Pullman Inc.

Pure Oil Co.