Misc: where were the cancelled 1940 summer olympics to have been held?

Questions

Pan Am places $525,000,000 order for 25 Boeing 747's.?

Apollo 13's Beech-built oxygen tank explodes.?

Christopher Wilder, FBI's 'most wanted man' accidentally killed self.?

Eleventh Space Shuttle Mission - Challenger 5 returns to Earth.?

Pope John Paul II met Rome's Chief Rabbi Elio Toaff at Rome synagogue.?