At London's Wiener Holocaust Library through June 16, an exhibit of letters from WWII tracks the spread of information by Jews seeking to protect loved ones from the Nazis' web

The Wiener Library’s display of Jewish refugee family photos, running through November 4, shows happy times – and dark clouds on the horizon

Through September, a display at the Wiener Library showcases efforts to monitor and combat Jew-hatred in France, Germany and the UK, from the Dreyfus affair through today

Sensing impending disaster, the Wiener Library's founder gathered evidence of German antisemitism from the 1920s, making an argument against the Nazis before Hitler came to power