This post is part of our Big Company, Small Town series, featuring large companies and the small towns in which they are headquartered.

If you like to save money on gas and live near a Wal-Mart in the Southeast and Midwest, chances are you are filling up these days at stations operated by Murphy Oil Corp. (NYSE: MUR), which is headquartered in the small town of El Dorado, Arkansas.

Those Murphy USA gas stations, located in parking lots of Wal-Mart Stores (NYSE: WMT), are just a small part of Murphy's many energy-related businesses. Murphy Oil is a giant, publicly-traded oil and natural gas exploration and production company with operations as far afield as Malaysia and Ecuador. Much of its U.S. drilling and refining is done off the shores of Louisiana, and some of that equipment was damaged during Hurricane Katrina. Sales in 2007 were more than $18 billion and the stock is up 60% in the past year. The company was recently ranked No. 134 in the Fortune 500 (to put that in perspective, Google is ranked 150 and Nike 153).

Corporate headquarters to all this (as well as a timber company that was spun off from Murphy in 1996), is El Dorado, population of 20,000. A boom town in the 1920s when oil was discovered, El Dorado has a colorful history and currently boasts summertime reenactments of a Wild West style gun fight on the courthouse steps, as well as a historic "haunted" theater. The town participated in the federal "Mainstreet" program, which provides grants for restoring historic downtowns, suggesting that the downtown was once in rough shape, but has since been prettied up.

This post is part of our Big Company, Small Town series, featuring large companies and the small towns in which they are headquartered.

Johnnie Bryan Hunt, eponymous founder of J.B. Hunt (NASDAQ: JBHT), was, like so many Depression-era children, a jack-of-many-trades. He picked cotton, harvested grain, sold lumber, auctioned livestock, sold lawn sod, and drove a truck. He was a handy soul, inventing a rice hull press and designing a unique poultry truck.

It was the rice hulls that would be the start of J.B. Hunt. J.B. came up with the concept of using rice hulls for chicken bedding. He and a partner used the rice hull business as seed money to buy five trucks and seven trailers and in 1969 started J.B. Hunt Transport. Today the company operates 11,000 trucks and about 47,000 trailers and containers, though its founder died in 2006 -- in time to see his little transport business become the largest publicly-traded trucking company in the world.

It's fitting that J.B. Hunt, which made its start on the profit earned from chicken farmers, should be based in rural Arkansas -- the land of poultry. Lowell, Arkansas is a tiny town, made up of only about 5,000 residents, so J.B. Hunt is a big force. With 16,000 employees, the company could triple the town's size based on its payroll alone.

Be sure to check out more Big Company, Small Town posts.

This post is part of our Big Company, Small Town series, featuring large companies and the small towns in which they are headquartered.

Like most big companies located in small towns, Tyson Foods (NYSE: TSN) has a delightfully quirky origin. John Tyson, owner of a battered truck and 500 chickens, opportunist, and debtor in the Depression-era 1930s struck an idea that probably seemed like folly to his neighbors: he'd deliver chickens to Chicago and Kansas City, where they'd get more money.

I'm sure for every story like Tyson's, there were 100 that didn't turn out so auspiciously. But in this tale, the hero comes back to his little Arkansas hometown with a profit and pays off his debts. He keeps on raising and selling birds in points north, eventually devising a plan to keep more of the profits by "vertically integrating" (I'll bet dollars-to-doughnuts he didn't call it that) and incubating his own chicks instead of buying them from a hatchery, as well as milling his own feed instead of buying it from a feed store.

This wasn't the end of Tyson's forethought. He bought a broiler farm in Springdale, Arkansas (beginning the company's history in that town) and started to cross-breed birds designed for meat production, instead of using heritage (or "pedigree") breeds.

This post is part of our Big Company, Small Town series, featuring large companies and the small towns in which they are headquartered.

You probably wouldn't think that the world's largest public corporation is located in a small town with a population of just 29,538 (based on the 2005 Census), but Wal-Mart Stores Inc. (NYSE: WMT) maintains its corporate headquarters in such a town -- Bentonville, Arkansas. Sam Walton opened his first store there in the mid-1940s -- Walton's Five and Dime -- on Main Street as a Ben Franklin franchise. Today that store is Wal-Mart's visitors' center where you can find thousands of company photographs and memorabilia.

Sam Walton's first Wal-Mart Discount City store opened in 1962 in Rogers, Arkansas, and within five years Walton had 24 stores in various towns in Arkansas. In 1968 he opened his first stores outside Arkansas, in Missouri and Oklahoma. Walton incorporated Wal-Mart Stores in 1969 and started selling shares over-the-counter in 1970. The company was first listed on the New York Stock Exchange in 1972. Today Wal-Mart has more than 6,700 stores worldwide and serves more than 176 million customers weekly.

MOST NOTEWORTHY: Motorola (MOT), SanDisk (SNDK), Time Warner (TWX), Schering-Plough (SGP), GlaxoSmithKline (GSK) and Openwave Systems (OPWV) were some of today's noteworthy upgrades:

• Deutsche Bank believes the worst is over for Motorola (NYSE: MOT) and expects an improvement in growth over the next several quarters, upgrading shares to Buy from Hold.

• CIBC upgraded shares of SanDisk (NASDAQ: SNDK) to Sector Outperformer from Sector Performer following checks that indicate NAND supply is being allocated, visibility is improving, and SanDisk positioning is strengthening.

• Pali Capital raised Time Warner (NYSE: TWX) shares to Buy from Neutral as they believe the "valuation has become too attractive to ignore."

• JP Morgan upgraded Schering-Plough (NYSE: SGP) and GlaxoSmithKline (NYSE: GSK) to Neutral from Underweight based on valuation.

• CIBC upgraded Openwave Systems (NASDAQ: OPWV) to Sector Performer from Sector Underperformer believing the Street's expectations are now in line with expectations, limiting downside potential at these levels...

OTHER UPGRADES:

• Merrill upgraded BT Group (NYSE: BT) to Buy from Sell.

• JP Morgan assumed coverage of Arkansas Best (NASDAQ: ABFS) with a Neutral rating, up from an Underweight rating.

• AG Edwards upgraded UnitedHealth (NYSE: UNH) to Buy from Hold.

• Merrill upgraded Dean Foods (NYSE: DF) to Neutral from Sell.

• UBS upgraded Marvell Technology (NASDAQ: MRVL) to Buy from Neutral.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

MOST NOTEWORTHY: Whirlpool Corp (WHR), Amazon.com, Inc (AMZN), Arkansas Best Corp (ABFS) and Capital One Financial Corp (COF) were today's more noteworthy upgrades:

• Citigroup upgraded Whirlpool Corp (NYSE: WHR) to Hold from Sell with a $107 target after better-than-expected Q1 results.

• Amazon.com Inc (NASDAQ: AMZN) was upgraded to Market Perform from Underperform at Piper Jaffray, to Hold from Sell at Citigroup, to Neutral from Underperform at Cowen, to Sector Perform from Underperform at Pacific Crest and to Buy from Hold at BWS Financial.

• Elsewhere, Stephens raised Arkansas Best Corp (NASDAQ: ABFS) to Equal Weight from Underweight with a $30 target.

• Bernstein upgraded Capital One Financial (NYSE: COF) to Outperform from Market Perform...

OTHER UPGRADES:

• Key Bank Capital Markets upgraded Cheesecake Factory Inc (NASDAQ: CAKE) to Buy from Hold.

• Alcatel-Lucent (NYSE: ALU) was upgraded to Buy from Neutral at Goldman.

• Stifel upgraded Advance Auto Parts, Inc (NYSE: AAP) to Buy from Hold with a $48 target.

• UBS raised Yamana Gold Inc's (NYSE: AUY) rating to Neutral from Reduce.

• Longbow Research upgraded Parker Hannifin (NYSE: PH) to Buy from Neutral.

• Lehman upgraded American Standard Cos (NYSE: ASD) to Buy from Hold with a $50 target.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

Consumers in Arkansas may get $37.8 million in vouchers for software and hardware products from Microsoft Corporation (NASDAQ:MSFT) as part of a settlement in a class action suit. If you are an Arkansas resident you can sign up to be part of the class action here. Microsoft does still hold that it did not violate Arkansas antitrust and consumer-protection laws, which is typical for Microsoft in these types of suits.

The settlement is not final. Judge Alice Gray of Pulaski County Circuit Court in Little Rock must approve the settlement. A decision is expected by March 6, 2007. The key question that was to be answered by this class-action suit was whether Microsoft overcharged for its Windows operating system, word processing and spreadsheet software. You're eligible for the vouchers if you live, or your company is based, in Arkansas and you bought Microsoft software directly from Microsoft or another retailer between January 1998 and December 2004.

This is not the first such settlement. Microsoft settled similar cases in Arizona and California and others are winding their way through the courts. For example, the company settled with Arizona in June 2004 for $104.6 million and California for $1.1 billion in January 2003.

Arkansas residents can get vouchers to buy computers, peripherals or other software from any manufacturer, similar to the settlements in other states. If Judge Gray approves the settlement, half of any unclaimed benefits will go to schools with students from low-income households and half will be given to Arkansas' Department of Education, according to the court's web site.