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Abbott Laboratories (NYSE: ABT) is a diversified pharmaceuticals and health care company. It has over 65,000 employees and operates in 130 countries. Abbott Laboratories was founded by Chicago physician Wallace Calvin Abbott in 1888. In 2003, Abbott had nearly $20 billion in sales.

The Allstate Corporation NYSE: ALL is the largest publicly held personal lines insurer in the United States and the second-largest of all personal lines insurers in the U.S. Allstate was founded in 1931 as part of Sears, Roebuck and Company. Allstate sells auto insurance, home insurance (in certain localities), life insurance, umbrella insurance, and commercial insurance.

Discovery is the number-one nonfiction media company, with a reach that encompasses television as well as digital media, retail products and online educational services.

General Motors Corporation, also known as GM, an American multinational corporation, is the world's largest auto company by production volume for the first 9 months of 2007, and by sales volume since 1931. [4] However, it ranks second behind Toyota in net worth, revenue and profit.

Grant Thornton LLP is the US member firm of Grant Thornton International, one of the six global accounting, tax and business advisory organizations.

Latham & Watkins LLP is one of the most prestigious and largest international law firms in the world, currently employing more than 2,100 attorneys based in the U.S., Europe and Asia. The firm was started in Los Angeles in 1934 and has extensive California roots, but its largest office is now in New York City. It currently has 2,100 attorneys throughout its offices in: Barcelona, Brussels, Chicago, Frankfurt, Hamburg, Hong Kong, London, Los Angeles, Madrid, Milan, Moscow, Munich, New Jersey, New York, Orange County, Virginia, Paris, San Diego, San Francisco, Shanghai, Silicon Valley, Singapore, Tokyo, and Washington D.C. As of 2006, it was the 5th largest law firm in the world by revenue, and the second largest in the United States.

McDonald's Corporation (NYSE: MCD) is the world's largest chain of fast food restaurants, primarily selling hamburgers, cheeseburgers, chicken products, french fries, breakfast items, soft drinks, milkshakes and desserts. More recently, it also offers salads, fruit, snack wraps, and carrot sticks.

Mercedes-Benz is a German brand of luxury and high-performance automobiles, buses, coaches, and trucks owned by Daimler AG. Mercedes-Benz has, over the years, introduced many of the technological and safety features that have become common in modern vehicles.

Motorola Inc. (NYSE: MOT) is an American multinational communications company based in Schaumburg, Illinois, a Chicago suburb. They make cell phones including the RAZR.