Fifty years ago this Sunday, America responded to a massive 7.9 magnitude earthquake in Peru that killed 70,000, injured 50,000, and left 800,000 homeless, a global humanitarian disaster unlike any in recent memory.

On June 28, 1970, the First Lady boarded an Air Force jet loaded with relief supplies en route to Lima, Peru. When she arrived, the physical damage and human suffering was even greater than she anticipated.

Learn more in this online exhibit.