Could someone give me a good list of Holocaust Novels?

I really like reading about the Holocaust. This time, I would like some fiction ones. Actually I am looking for a particular Holocaust novel. Its not 'Behind the Bedroom Wall.' Or 'The Secret Window" But it's about two girls that are sisters who are Jewish and are being hidden by two older people in the countryside. I remember they are in a room and they have a small window to look out from and the old man gives the girls a calendar, and the nazis come and decide to use they're house as a place to rest, and the girls have to hide behind a closet in a secret room so they won't be found. Also they are at some point moved outside underground, but it gets to be too cold for them. And the old woman who cares for them also has a mother staying in the house with them, and the older woman is very fond of the younger Jewish girl. And sews things for her. Also the woman of the house has to shoo away people from her yard for eating gr and stuff left over for the animals because they are starving. I know this is extremely vague, but I hope this rings a bell for someone. I love this book but CANNOT remember the name!!!! thanks. :)