Edward Bellamy 
Looking Backwards [PDF ebook] 
From 2000 to 1887

One of the best-selling books of its era, Looking Backwards presents a science-fiction-influenced twist on standard political philosophy. In the novel, protagonist Julian West finds himself transported to twenty-first century America, which has become a socialist utopia. With all the talk in the media about socialism these days, Looking Backwards offers a fascinating glimpse into the origins of the socialist school of thought.