Question: Albert Burns rode for what American motorcycle manufacturer that was founded in Milwaukee, Wisconsin?

full_context: Document 1: Albert Burns (motorcyclist): Albert "Shrimp" Burns (August 12, 1898, Oakdale, California – August 14, 1921, Toledo, Ohio) was an American dirt and board track motorcycle racer in the early 20th century. Riding for Harley-Davidson and later Indian, he won multiple races in California and later the east coast and the midwest. He won the national championship in 1919, and was inducted in the AMA Motorcycle Hall of Fame in 1998.
Document 2: Andrew Hines: Andrew Hines (born May 25, 1983 in Villa Park, California) is a five-time National Hot Rod Association Pro Stock Motorcycle champion. He rides the flagship Screamin' Eagle/Vance & Hines Harley-Davidson V-rod. Andrew follows in the footsteps of his brother and crew chief, Matt Hines (NHRA Champion 1996, 97, 98). The team is headed by the legendary duo of Terry Vance and Byron Hines.
Document 3: Victory Motorcycles: Victory Motorcycles is an American motorcycle manufacturer with its final assembly facility in Spirit Lake, Dickinson County, northwestern Iowa, United States. It began production of its vehicles in 1998, and began winding down operations in January 2017.
Document 4: Butts Wagner: Albert Wagner (September 17, 1871 – November 26, 1928), was an American professional baseball player. He played one year of Major League Baseball for two different teams during the 1898 season. He was Honus Wagner's older brother.
Document 5: Fred Martinson: Fred Martinson (February 22, 1947 – February 2, 2012) was an American motorcycle trials rider. Martinson was four times AHRMA Vintage National Trials Champion, winning titles in 2003, 2008, 2009 and 2010, competing in approximately 615 trials through his career. In 2011 he was inducted into the NATC Hall of Fame. The Martinson family are still deeply involved in the sport with Fred's sons Derek and Brian competing at National level for many years, and now grandchildren are starting to also compete
Document 6: American IronHorse: American IronHorse was an American motorcycle manufacturer that was founded in 1995 by Tim Edmundson and Bill Rucker. At one time, AIH was the largest factory producer of custom motorcycles in the USA. Their 224000 sqft factory was located in Fort Worth, Texas, and housed the complete manufacturing process under a single roof. Although most (305) parts for the bikes were made in-house, such as the seats and wheels, all American IronHorse motorcycles were built with S&S engines and were assembled in-house. In Spring 2008, American Ironhorse ceased production on all cycles and most company assets were liquidated at auction.
Document 7: Buell Motorcycle Company: The Buell Motorcycle Company was an American motorcycle manufacturer based in East Troy, Wisconsin, and was founded in 1983 by ex-Harley-Davidson engineer Erik Buell.
Document 8: Titan Motorcycle Company: Titan Motorcycle Company is an American motorcycle manufacturer that was founded in 1995 in Phoenix, Arizona and was the first custom motorcycle company to produce in volume. At the time there was a shortage of brand new Harley-Davidsons, and those who were lucky enough to get a new one would quite often disassemble them and add lots of chrome custom parts. There was a market for fast available mild customized bikes. These motorcycles had a registered name and a valid VIN and were easy to finance but at first not easy to insure due to bank uncertainty with the manufacturing processes. This carried over to the Bl-Book listing where it caused incorrect prices on these motorcycles and made it difficult for sellers to get the correct price. The few specialty motorcycles Like the Titan Phoenix TRM Custom where only 25 were built, one at a time each bike built or put together by one person. Titan owners went public on the NASDAQ in 1997.
Document 9: Harley Davidson and the Marlboro Man: Harley Davidson and the Marlboro Man is a 1991 action biker film starring Mickey Rourke and Don Johnson. The film was written by Don Michael Paul and directed by Simon Wincer.
Document 10: Harley-Davidson: Harley-Davidson, Inc. (H-D), or Harley, is an American motorcycle manufacturer, founded in Milwaukee, Wisconsin in 1903.
Document 11: 1952 Isle of Man TT: The 1952 Isle of Man Tourist Trophy was the start of Bob McIntyre's association with the Isle of Man, when he came second in the Junior Clubman TT that year. Irishman Reg Armstrong won his first Senior TT event as well as coming in second in the Junior TT race on a Norton. Armstrong, as a Norton works rider, was back-up to Geoff Duke who came first in the Junior race.
Document 12: Russ Mahon: Russ Mahon is an avid cyclist and founder of a cycling group known as The Morrow Dirt Club. Originally based in Cupertino, California, The Morrow Dirt Club were, arguably, the first to put multiple gears on pre-World War II balloon-tired bicycles for use off-road. These bicycles were the precursor to the modern mountain bike. Russ, along with Tom and Carter Cox, competed in a race in Mill Valley, California in 1974 on these bikes. It was there that Gary Fisher and Joe Breeze, among others, saw the bikes and developed them into the worldwide phenomenon known as mountain biking. In 2007, Russ Mahon was profiled in the documentary film, Klunkerz: A Film About Mountain Bikes.
Document 13: Boss Hoss Cycles: Boss Hoss Cycles is an American motorcycle manufacturer, founded by Monte Warne in 1990 and based in Dyersburg, Tennessee. The company manufactures special high-performance motorcycles and trikes equipped with V8 engines, produced by Chevrolet, ranging in size from 350 cubic inches (5.7 liters) to 502 cubic inches (8.2 liters), equipped with semi-automatic transmissions, making them by far the most powerful motorcycles in the world. By the mid-1990s, Boss Hoss was selling 300 vehicles per year.
Document 14: Albert Johnson (jockey): Albert M. Johnson (November 18, 1900 - September 18, 1966) was an American Hall of Fame jockey. Born in the rural community of Milan, Washington, Albert Johnson began his career in 1917 at Playfair Race Track in nearby Spokane. His success at local racetracks led to a move to tracks in the New York City area where he was the principal jockey for Morvich in his undefeated two-year-old season in 1921 and with whom he won the 1922 Kentucky Derby. Johnson was hired by prominent owner/breeder Willis Sharpe Kilmer, whose racing stable had included Sun Briar and Exterminator. Riding for Kilmer brought Albert Johnson rode Exterminator to a number of important wins and ended 1922 as the United States Champion Jockey by earnings.
Document 15: Al Unser: Alfred "Al" Unser (born May 29, 1939) is an American automobile racing driver, the younger brother of fellow racing drivers Jerry and Bobby Unser, and father of Al Unser Jr.. Now retired, he is the second of three men to have won the Indianapolis 500-Mile Race four times, the fourth of five to have won the race in consecutive years, and won the National Championship in 1970, 1983, and 1985. He is the only person to have both a sibling (Bobby) and child (Al Jr.) as fellow Indy 500 winners. Al's nephews Johnny and Robby Unser have also competed in that race.
ground_truth: Harley-Davidson, Inc.