The Source is fabulous! It’s dense, authoritative, well-researched & well-referenced. For me, it was a slow read - because it is filled with thought-provoking information & insights. Rivers have shaped the basic facts of America - where we live, how we conduct business, how we deal with risks, and how we govern ourselves. By this great work, Martin Doyle (author) provides a thorough history of the central role Rivers have played in our local/national development. He informs us how vital (despite being taken for granted & oft-abused) Rivers are to our future. For anyone wishing to better understand issues of American Environment, Government, and History - this seems a “must read”. Fabulous job, Mister Doyle!!