Holiday Fun is a magazine story.
Every day in the summer, Duke picks up children from the station at the bottom of the mountain and takes them up to the lake for a holiday. One day, Duke hears all of the children chattering excitedly about their holiday plans. One little boy does not say a word, leaving Duke wondering what he would be doing on his holiday.
When they arrive at the station by the lake, all of the children disembark. The quiet little boy does not move. He asks if he can ride up and down the mountain with Duke everyday. Duke's driver questions if that is how the boy really wants to spend his holiday and the boy replies that he wants to drive a train like Duke when he grows up.