Each book in the Encounter: Narrative Nonfiction Picture Books series follows the life and work of a notable woman in history, framing her story in a way that young readers can understand. Jars of Hope examines the life of Irena Sendler, a member of the Polish Resistance group Zegota during WWII, who smuggled more than 2,500 Jewish children out of ghettos before they could be sent to concentration camps. Though careful not to take too many liberties with a historical text, these read like fiction and will spark the interest of many young readers. Each installment has a different illustrator, giving them all a unique flavor, and all have some sort of back matter that recaps the facts gleaned from the story. They vary somewhat in audience ranges but this is an interesting concept with an effective, highly visual approach.