Honey Cake by Joan Betty Stucher, illustrated by Cynthia Nugent

From amazon.com
In this Holocaust rescue story where the camps remain a distant but scary threat, a young Jewish boy in Copenhagen tells of the Nazi invasion of Denmark, the widespread resistance among ordinary citizens, and how, after three years of occupation, the Danes help many Jews escape the roundups. Ten- year- old David knows that the grown- ups around him have secrets and that his sister is part of the resistance. Then David himself becomes involved. Black- and- white illustrations throughout break up the text of this chapter book, which can serve as an introduction to the grim history.