Biography & Autobiography. History. Nonfiction. During World War II, Irena Sendler, a Polish Catholic social worker, organized a rescue network of fellow social workers to save 2,500 Jewish children from certain death in the Warsaw ghetto. Incredibly, after the war her heroism, like that of many others, was suppressed by communist Poland and remained virtually unknown for sixty years. Unknown, that is, until three high school girls from an economically depressed, rural school district in southeast Kansas stumbled upon a tantalizing reference to Sendler's rescues, which they fashioned into a history project, a play they called Life in a Jar. Their innocent drama was first seen in Kansas, then the Midwest, then New York, Los Angeles, Montreal, and finally Poland, where they elevated Irena Sendler to a national hero, championing her legacy of tolerance and respect for all people. Life in a Jar: The Irena Sendler Project is a Holocaust history and more. It is the inspirational story of Protestant students from Kansas, each called in her own complex way to the history of a Catholic woman who knocked on Jewish doors in the Warsaw ghetto and, in Sendler's own words, "tried to talk the mothers out of their children.".