The White House aide who revealed that Richard Nixon had secretly recorded his conversations as president has died.

Alexander Butterfield, a former top aide to President Richard Nixon whose disclosure of a secret taping system in the White House dramatically shaped the Watergate scandal, ultimately leading to Nixon ...

Nixon aide Alexander Butterfield who exposed Watergate tapes dies at 99 - Butterfield believed he’d had a hand in the ...

By Bill Trott WASHINGTON, March 9 (Reuters) - Alexander Butterfield, the White House aide who disclosed Richard Nixon's secret audio taping system, providing the "smoking gun" of the Watergate scandal ...