Those works, an ecological history of New England settlement and a volume on "Chicago and the Great West," are Changes in the Land and Nature's Metropolis.  
One work by this author notes that hemlock was often confused with fir and spruce, and concludes by describing the creation of "a world of fields and fences." Another of his works proposes "reading Frederick Jackson Turner backwards," begins with a journey to Green Lake, and describes the mechanisms used at "Porkopolis." Those works, an ecological history of New England settlement and a volume on "Chicago and the Great West," are Changes in the Land and Nature's Metropolis.  He also wrote an (**) op-ed column about the "radical break" that quoted Joseph Welch's question, " Have you no sense of decency, sir, at long last?" "Alberta Darling" and "AFSCME" were among the (*) search terms indicated in Stephan Thompson's March 2011 Open Records Law request to search the university email account of this man who blogs at "Scholar as Citizen." For 10 points, name this professor of history and environmental studies at the University of Wisconsin.
One work by this author notes that hemlock was often confused with fir and spruce, and concludes by describing the creation of "a world of fields and fences."
William Cronon