| early 1900's | Locomotives are black, cabooses are red, boxcars are brown, passenger cars are green and everything else is black. |
| 1917-1923 | Locomotives may have USRA paint. |
| 1923 | Hocking Valley is merged in. |
| 1927 | Tri Color passenger cars appear. |
| 1940-1950 | Hoppers may have wood sides. |
| 1947 | Pere Marquette is merged in. |
| 1950 | C&O Donut logo appears. |
| 1951 | Diesels begin to appear. |
| 1953 | Lightweight streamline passenger cars appear. |
| 1957 | Steam locomotives are gone. |
| 1960 | Yellow cabooses appear. |
| 1965 | Fluted sides start to come off streamline passenger cars. |
| 1969 | Blue cabooses appear. |
| 1972 | Amtrak takes over passenger service. |
| 1974 | Roofwalks should be removed. |
| 1975 | Chessie System Paint starts to replace C&O paint. |
