National September 11 Memorial & Museum (Organization) : No day shall erase you : the story of 9/11 as told at the National September 11 Memorial Museum / Foreword by Michael R. Bloomberg ; edited by Alice M. Greenwald, museum director
National socialism and science. : The man who stalked Einstein : how Nazi scientist Philipp Lenard changed the course of history / Bruce J. Hillman, Birgit Ertl-Wagner, and Bernd C. Wagner. [Boundless electronic resource]