Dobry

Why is this book a forgotten Newbery? I had so much trouble finding a used or new copy that I ended up having to get a copy from my library.

Dobry is the story of a boy in Bulgaria who wants to become an artist during a time when most people are farmers. The story is full of details about Bulgarian life during the time, the arrival of storks, a massaging gypsy bear, diving through ice to locate a golden crucifix. Why, then, is this book forgotten? The illustrations were initially not compelling, but I grew to appreciate them as the story progressed. There is mention in the book of both peasants and gypsies; could this be why the book is ignored?