NPR logo 3. Simon/1920

3. Simon/1920

3. Simon/1920

Audio will be available later today.

SCOTT SIMON SPEAKS WITH NEW YORK CITY HISTORIAN CHRISTOPHER GRA ABOUT THE UNSOLVED BOMBING THAT OCCURRED ON SEPTEMBER 16, 1920 IN THE WALL STREET AREA OF LOWER MANHATTAN THAT, UP UNTIL THE DEADLY BOMBING THIS WEEK IN OKLAHOMA CITY, HAD BEEN CONSIDERED THE DEADLIEST SINGLE ATTACK IN THE UNITED STATES.