Question: Douglas M. Baker, Jr. founded a company headquartered where?
Context: Charlotte Aircraft Corporation is a company headquartered in Charlotte, North Carolina which deals in used aircraft and aircraft parts.  The company was founded by Jenks Caldwell Sr. in 1953.  Today the company is run by his son Jenks Caldwell Jr.  The company’s main business is reselling refurbished aircraft parts which it acquires by purchasing used aircraft and stripping them of their useful parts, storing them until required, and re-furbishing them before sale to the customer. Edmund O. Schweitzer Jr. founded E. O. Schweitzer Manufacturing in 1950 for the purpose of manufacturing fault indicator technology.  His father, Edmund O. Schweitzer, was a co-founder of S&C Electric in Chicago, Illinois, USA.  His son, Edmund O. Schweitzer, III is founder and president of Schweitzer Engineering Laboratories (SEL) in Pullman, Washington, USA.  Schweitzer Jr. amassed over 100 patents by the time of his death in 2000. Douglas M. Baker, Jr., (born December 5, 1958) is chairman of the board and chief executive officer of Ecolab, Inc., a Fortune 500 company in water, hygiene and energy technologies and services. Wilson History and Research Center (WHRC) was a non-profit 501C3 charitable foundation that housed a private collection of twentieth century military headgear and other militaria in Little Rock, Arkansas.  Robert M. Wilson, Jr. founded the WHRC in 2008.  The collection was researched and presented online through the WHRC’s website.  The site contained over three thousand individual items.  Its goal was to provide a catalog of every piece of military headgear from the twentieth century. Paul J. Weinstein Jr. founded and directs the Graduate Program in Public Management at Johns Hopkins University and has also taught at Columbia University and Georgetown University.  From 2001 to 2009 he was Chief Operating Officer and currently serves as a Senior Fellow at the Progressive Policy Institute, a centrist think tank based in Washington, D.C. that is affiliated with the Democratic Leadership Council.  Weinstein, who worked for eight years in the Clinton White House, first as Special Assistant to the President and Chief of Staff of the Domestic Policy Council, and later as Senior Adviser for Policy Planning to Vice President Al Gore, is the author of the textbook "The Art of Policymaking" which is in its second publication.  He has written extensively on issues such as economic policy, government spending, Social Security and taxes. Paul Jr.  Designs (PJD) is a lifestyle brand motorcycle customizer and clothing vendor based in Rock Tavern, New York, USA.  Paul Teutul Jr. founded the design firm in 2009 after waiting out a one-year non-compete clause with his former company, Orange County Choppers (OCC). Heaven Hill Distilleries, Inc. is an American, private family-owned and operated distillery company headquartered in Bardstown, Kentucky that produces and markets the Heaven Hill brand of Kentucky Straight Bourbon Whiskey and a variety of other distilled spirits.  Its current distillery facility, called the Heaven Hill Bernheim distillery, is in Louisville, Kentucky.  It is the seventh-largest alcohol supplier in the United States, the second-largest holder of bourbon whiskey inventory in the world, the largest independent family-owned and operated producer and marketer of distilled spirits in the United States, and the only large family-owned distillery company headquartered in Kentucky (not counting the Brown-Forman Corporation, which is publicly traded but more than two-thirds family-controlled, or the Sazerac Company, which is family-owned but headquartered in Louisiana). Ecolab Inc., headquartered in St. Paul, Minnesota, is an American global provider of water, hygiene and energy technologies and services to the food, energy, healthcare, industrial and hospitality markets.  It was founded as Economics Laboratory in 1923 by Merritt J. Osborn, and renamed "Ecolab" in 1986. Gevo, Inc. is a renewable chemicals and advanced biofuels company headquartered in unincorporated Douglas County, Colorado in the Denver-Aurora metropolitan area.  The company develops bio-based alternatives to petroleum-based products using a combination of biotechnology and classical chemistry.  Gevo converts renewable raw materials into isobutanol and renewable hydrocarbons that Gevo believes can be directly integrated on a “drop in” basis into existing fuel and chemical products.  Gevo’s investors include Burrill & Company, Khosla Ventures, Lanxess, Osage University Partners, Total, and Virgin Green Fund, among others. Mollie Taylor Stevenson Jr. (1946) is a former model who, along with her mother, Mollie Taylor Stevenson Sr., were the first living African-American women inducted into the National Cowgirl Museum and Hall of Fame.  She also received the Chester A. Reynolds Memorial Award, one of only two women to have received the honor; the other being Connie Douglas Reeves.  Mollie Jr. founded the American Cowboy Museum which is located on the Taylor-Stevenson Ranch, an historic working ranch located near Houston, originally purchased in 1875 by her great grandfather, Edward Ruthven Taylor.  The ranch is among the oldest African American-owned ranches in the United States.
Answer: St. Paul, Minnesota