The Cry for Justice

John Griffith London (born John Griffith Chaney; January 12, 1876 – November 22, 1916) was an American novelist, journalist, and social activist. A pioneer in the world of commercial magazine fiction, he was one of the first writers to become a worldwide celebrity and earn a large fortune from writing. He was also an innovator in the genre that would later become known as science fiction. His most famous works include The Call of the Wild and White Fang, both set in the Klondike Gold Rush...

Upton Sinclair, Jr., was a Pulitzer Prize-winning American author who wrote over 90 books in many genres. He achieved popularity in the first half of the 20th century, acquiring particular fame for his 1906 muckraking novel The Jungle. It exposed conditions in the U.S. meat packing industry, causing a public uproar that contributed in part to the passage a few months later of the 1906 Pure Food and Drug Act and the Meat Inspection Act. --Wikipedia