Red caboose at the back,
orange tank car,
green cattle car,
purple box car,
black tender and 
a black steam engine . . .
freight train.

The powerful words evoke the essence of inexorably rolling wheels, so that even a child not lucky enough to have counted freight cars will feel he has watched a freight train passing. A book truly for the youngest child—and for every one of us who has been that child.

From the dust jacket of a later edition