Parents who remember the pleasures of Pullman travel--and anyone planning a train trip--will find this a handy introduction to folding beds and washbowls, to the delights of eating in the dining car. The story itself is a thin excuse for a fictional excursion. Andy is disgusted when Daddy brings home the train tickets to Chicago--""I""d rather go by rocket ship,"" he says. On board, he decides that his roomette makes a fine scape capsule, and at bedtime he takes off for the moon. But when he awakens, the moon is so big and bright that Andy is afraid. ""Which switch should he switch to turn the rocket around?"" Daddy knows...and soon Andy is snug in his bed. He decides he wants to take the train home: he likes trains, and besides--""Rockets don't go to New York."" Andy, his fears and fantasies, seem young for the second graders who are the obvious readers, and anyone who thinks he's going on an inter-space jaunt will be disappointed, but for younger children this may be the right ticket.