During the 1930's, it introduced an air conditioned passenger train with the slogan of "sleep like a kitten". The literature featured a picture of a sleeping kitten. That kitten would later be known as Chessie.
In 1960, the C&O started to buy B&O stocks and in 1962 the B&O stockholders approved C&O control of the railroad. In 1972, the Chessie System was formed while it wasn't quite a merger of the two railroads it was pretty close.
And I leave you with one more shot of her. Isn't she a pretty kitty?