By the turn of the 20th century, Dallas was the leading drug, book, jewelry, and wholesale liquor market in the Southwestern United States. It also quickly became the center of trade in cotton, grain, and even buffalo. It was the world's leading inland cotton market, and it still led the world in manufacture of saddlery and cotton gin machinery. During the early 20th century, Dallas transformed from an agricultural center to a center of banking, insurance, fashion retailing and other businesses. Founded here were Neiman Marcus and the now-defunct A. Harris and Sanger Brothers ready-to-wear stores. The 14-story Praetorian Building was the first skyscraper west of the Mississippi River and the tallest building in Texas.