““Sinclair’s was also an age when writers, both journalists and novelists, were experiencing a thrilling sense of their own efficacy. The investigative exposé—what President Theodore Roosevelt would unflatteringly dub “muckraking,” after the character in John Bunyan’s The Pilgrim’s Progress (1678, 1684) who could “look no way but downward, with a muckrake in his hands”—had taken the magazine and publishing world by storm, had grabbed hold of the popular reader, and was shining a bright light on the ever-darkening realms of child labor, prisons, insurance companies, and, foremost, American enterprise and its role in the creation of a new American class of impoverished industrial wage slaves.””
