Chesapeake & Ohio / Baltimore & Ohio In Color

As the merger scene in the eastern United States heated up in the early 1960s with Erie Lackawanna, N&W-NKP-Wabash, and talk of Penn Central, a union of a different type occurred between the Chesapeake and Ohio and the Baltimore and Ohio. While not yet a true merger for several reasons, the affiliation was dubbed C&O/B&O and quite visible trackside during the 1960s on timetables, advertisements, corporate reports, and especially trackside where C&O and B&O locomotives began mixing it up, especially on the B&O.