CSX at 40 is a 100-page special issue from Trains magazine commemorating the 40th Anniversary of one of the continents seven big Class I freight networks. It takes you on a journey using system maps and routes as they were in 1979. See the predecessor railroads: Chessie, Seaboard and Conrail and how they evolved into the modern iteration of CSX today. Travel down some of the key routes from Chicago to Nashville to Florida, and more. Now is a great time to take a look at this major eastern railroad and its place in history.