In particular, his _Outline of History_ is well worth reading for its examination of how the commons (in terms of common pastural areas and so forth shared by a community) were eroded away by the newfangled notion of individual property.

It's on Project Gutenberge, and the Librivox recording may be workable depending on your tolerance for voices and background noise.

Though it's worth noting that the authorship of that text is challenged/potentially problematic --- look up Florence Deeks' copyright challenge.

He also wrote a fascinating biology textbook (“The Science of Life”, with two co-authors) and a book about the economy entitled “The Work, Wealth, and Happiness of Mankind”. His nonfiction work deserves as much attention as his fiction, it is excellent.

I have a copy of the Outline of History, now I will look for the Librivox recording. In his Autobiography he discusses Florence Deeks' copyright challenge. He was rather frustrated by the challenge. Apparently she made several claims against others too.