Escape from Warsaw

by Ian Serraillier is one of the best books I have ever read that takes place during WWII.

The Borrowed House

by Hilda van Stockum. This book is a good book, but it's for slightly older readers. It takes place during World War II' in Germany, and then Holland. It's about a 14 year-old German girl named Janna and a 17 year-old Jewish boy named Sef. Janna goes to live with her actor-parents in a "borrowed house" that was taken from a Dutch family by the Germans. Although Janna initially sees the Nazis as rather wonderful people, she learns about what they have done to thousands upon thousands of people from Sef, and has a  different opinion by the end of the book.

The Winged Watchman

by Hilda Van Stockum, is a book that takes place during World War II in Holland. This book is about a boy named Joris, Joris' brother, Dirk Jan, their mother and father, and Joris' dog, Freya. The Winged Watchman is a very good book.

Snow Treasure

by Marie McSwigan takes place during World War Two. This story is about some Norwegian children who smuggle gold, on their sleds, to a ship. It is a very exciting story. I could read it again and again and again without getting tired of reading it.

The book is available from Recorded Books Classics in audio format. I could also listen to it again and again and again.

P.S. This book is a great read-aloud.

Pancakes Paris

by Claire Huchet Bishop

Twenty and Ten

by Claire Huchet Bishop takes place during World War II. For twenty children at an orphanage, hiding ten Jewish children from the Nazis "seems like a game." But one day the real Nazis come. But in the end everything turns out alright.
P.S If anyone has seen the movie, Miracle at Moreaux, they will want to read this book, because this movie is based on the book, Twenty and Ten.