Hanna's Cold Winter by Trish Marx illustrated by Barbara Knutson*

The main character shares how he and his family and their town save the zoo's hippos during an extremely cold winter when food was scarce because of World War II by feeding them donated straw slippers, doormats and hats. 
I liked how the author develops the family and their routines before advancing into the main story line of "saving the hippos". 
I learned that during World War II Buda and Pest were two separate towns!
The illustrations depict the time period and beauty of Hungary's architecture well.
*Based on a true story.
*Highly recommend.
-Borrowed via Inter-Library Loan as my county library system does not own it.