What company's annual revenue is greater than the GDP of Norway? Who employs more people in the U.S. than any other private company? Which retailer always seems to be embroiled in an "are they evil or aren't they?" controversy that demands discussions about class, race, gender, and geography? Wal-Mart may have only been around for 50 years, but the world's biggest retailer has definitely made an impression. And after looking at the first-ever Wal-Mart ad, touting the grand opening at their first Arkansas location, the infamous tagline, "Save Money. Live Better" is a pretty close hybrid of their first (though a little less dogmatic): "You Must Save at Wal-Mart. Our Policy Guarantees It." With 22 departments, the first Wal-Mart wasn't a minor affair, but it's fun to see that the giant had quaint(er) roots. (WWD)