In this Jan. 27, 2014 photo provided by Jane Rohman, an image on a tablet screen at the Simon Wiesenthal Museum of Tolerance in New York, showing Moritz Wacs, circled, posing for a photo with others in Vienna, Austria in the 1920's. University of New Haven students are working on a daunting assignment: Who was the suspected Nazi who protected Wacs and his Jewish family 75 years ago from violence, and warned them to flee Austria just before World War II broke out? (AP Photo/Jane Rohman)