Jack London spent a year in the Yukon researching his book about life during the Klondike goldrush. His hero, a dog called Buck, is taken from his home in Seattle and begins his brutal life as a sled dog. This version of Jack London’s tale is retold in simple English, making it accessible to younger learners as well as EFL ESL students. The book is currently priced at just 99 cents. To buy it, click here.