This looks like an interesting book about American Catholicism in the 20th century, Cushing, Spellman, O’Connor: The Surprising Story of How Three American Cardinals Transformed Catholic-Jewish Relations (Eerdmans 2011), by Rabbi James Rudin.  The publisher’s description follows:

James Rudin, a rabbi who has made a career of writing about and participating in interreligious dialogue, demonstrates how Cardinals Richard Cushing and Francis Spellman influenced the Second Vatican Council to adopt Nostra Aetate – a statement against anti-Semitism – and how Cardinal John O’Connor transformed that document’s sentiments into practical results a generation later. Two introductory chapters trace Jewish-Catholic relations from the first century to the twentieth, explaining the extraordinary nature of these cardinals’ actions.

Pithy and accessible, this book will spark lively discussion among church and synagogue study groups. It will also add compelling case studies to seminary courses on ecumenism and interfaith dialogue — regardless of any given group’s position on the ideological spectrum.