Welcome to Chessie Nation! Chessie System History – Learn some interesting history about the Chessie System The C&O-B&O Unity, the beginning of the Chessie System Chessie System History: The C&O and the B&O start their association. The C&O-B&O and the Cuban Missile Crisis The Coming of the Chessie System. The Happy Railroad Occasion! Coming — Select bimonthly articles from the pages of Chessie News. This was a publication put out for Chesapeake & Ohio employees, and also later included Baltimore & Ohio and Chessie System.