In 2009, Wendy Lower, acclaimed author and historian, was shown a horrific photograph of a Jewish family that revealed seldom-discussed aspects of the Nazis’ genocidal ideology. This rare evidence of open-air shootings in Nazi-occupied Ukraine, where Germans and their co-conspirators massacred Jews in broad daylight, inspired a relentless decade of research, interviews, and discovery. These efforts resulted in Wendy Lower’s latest book: “The Ravine: A Family, a Photograph, A Holocaust Massacre Revealed.” Wendy Lower joined us in conversation as we discussed “The Ravine” and the larger phenomenon of family histories, testimonies, material cultures, and themes of resistance and memory.