Jack London's two most famous works, The Call of the Wild and White Fang, follow their protagonists, two male sled dogs, through their exploits and experiences with rural and urban settings. Through the use of an approachable creature, a strong and faithful dog, London offers valuable insight into the growing resentment and fear of the modernization of America at the turn of the century. These popular books romanticized the appeal of the rustic life offered in Alaska and contrasted the increasing buzz of modern cities with the frontier of the Alaskan wilderness.
Many students of Science, Technology and Society would turn their nose up at Jack London's "childrens books," however their lasting popularity indicates the warrants of their insight into people's desire to leave the confines of a modern city in search of the wild.
Here are some more links,
The Call of the Wild (Amazon),
White Fang (Amazon),
Jack London (Wikipedia).