This must have been one of the earliest historical fiction children titles for World War II, since it came out in 1952. I probably read it in the 1960s. It meets one of my main problems with WWII lit for young kids: while it makes it clear that it was a case of life and death for the kids, it never actually says that, well, except for one rather understated sentence. Actually, reading it again as an adult, I am not completely sure if the narrator, Janet, age 11, completely understood that either. While there is no way to miss the terror that the kids are in, nothing bad actually happens to the kids, with the worst thing being one of the French kids got locked up in the coal closet or building. It is quite clear that the Jewish kids understood the danger they were in. It isn't so clear that the original 20 French kids understood it. However, they understood it was war, which it had been for pretty much their whole lives, and that the other kids, who they point out, look just like the French kids, were in danger of being killed. It was fascinating listening to the kids argue about what it would feel like to be completely full after a meal and to be certain that one account of being full had to be made up. Now that is a way to let young readers know that this is scary and serious, without giving them nightmares! It is a fast read and I found myself swept up in it, even though I remembered much of the book from when I had originally read it. Still top quality literature, and illustrations. I had not been aware that the second illustrator was a Caldecott winner till I saw it this time. I prefer the black and white cover to the color title showing kids peaking out from a hole while soldiers look the kids. The black and white one just seemed to show the apprehensive atmosphere of the book better to me. I hope they bring this back out in hardcover again!