A time travel book about a sweet boy and his father living through the Depression. Oscar and his father collect and build trains in their basement, and when Oscar's father loses his job, the trains must be sold. Eventually Oscar time travels using the train set, and what started out as a simple story becomes more complex. There are a few twists with the time travel plot that may take an older reader (4th and up?) but it would also be a great chapter book to read aloud with a child (2nd and up). The illustrations add to the beauty of the story. It made me want to start collecting trains! And time traveling would be fun, too.