While a literature of reform had already appeared by the mid-19th century, the kind of reporting that would come to be called "muckraking" began to appear around 1900.[6] By the 1900s, magazines such as Collier's Weekly, Munsey's Magazine and McClure's Magazine were already in wide circulation and read avidly by the growing middle class.[7][8] The January 1903 issue of McClure's is considered to be the official beginning of muckraking journalism,[9] although the muckrakers would get their label later. Ida M. Tarbell ("The History of Standard Oil"), Lincoln Steffens ("The Shame of the Cities") and Ray Stannard Baker ("The Right to Work"), simultaneously published famous works in that single issue. Claude H. Wetmore and Lincoln Steffens' previous article "Tweed Days in St. Louis" in McClure's October 1902 issue was called the first muckraking article.