Post Early for Christmas

Post Early for Christmas is a 1989 annual story.

Plot
One evening, about a week before Christmas, Percy has to deliver the special mail along the branch line. All went well until they puffed up to a snowdrift in the valley, and despite having a snowplough, he couldn't be able to push his way through and ended up stuck there for the night. The next day, the clouds were cleared as Harold was able to be allowed to take off and collect the mail in no time, but Percy had to wait to be pulled out in a following afternoon.

Characters

 * Percy
 * Thomas
 * Toby (mentioned)
 * Harold (does not speak)
 * Mrs. Kyndley (mentioned)
 * Donald and Douglas (mentioned)
 * The Fat Controller (mentioned)