The People of the Abyss is a book about life in the East End of London. Jack London wrote this first-hand account by living in the East End for several months, sometimes staying in workhouses or sleeping on the streets. The conditions he experienced and wrote about were the same as those endured by an estimated 500,000 of the contemporary London poor. Jack London was an American author, journalist, and social activist, a pioneer in the world of commercial magazine fiction and was one of the first fiction writers to obtain worldwide celebrity and a large fortune from his fiction alone. He is best remembered as the author of Call of the Wild and White Fang, both set in the Klondike Gold Rush. He also wrote of the South Pacific in such stories as The Pearls of Parlay and The Heathen, and of the San Francisco Bay area in The Sea Wolf.