Harry Gordon Selfridge was an American retail magnate best known for founding the famous department store, Selfridges, in London. Born on January 11, 1858, in Ripon, Wisconsin, he revolutionized the shopping experience by introducing innovative marketing techniques and customer service practices. His store opened in 1909 and became a model for modern retail. Selfridge was also known for his extravagant lifestyle and love for the arts. He promoted various cultural events and was involved in the development of Oxford Street, where his store is located. He passed away on May 8, 1947, leaving a lasting legacy in the retail industry.