I don't know if I'll finish all three, but right now I've scraped the surface of a magnificent biography of William Randolph Hearst, The Chief by David Nasaw. Also by Nasaw, Andrew Carnegie, and finally by Ron Chernow The House of Morgan. All three were recommended in a New York Times book review and all three seem to be eloquently and evocatively written and superbly researched. I don't know if I'll actually make it through all three, but I shall try.
