Alexander Butterfield, who has died aged 99, was the former White House aide who dropped a bombshell in July 1973 when he told a Senate committee investigating the circumstances surrounding the 1972 ...

Alexander Butterfield, the White House aide who disclosed Richard Nixon's secret audio taping system, providing the "smoking gun" of the Watergate scandal ...

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 ...

Mr. Butterfield, a onetime aide to the president, electrified the Watergate investigation with his bombshell testimony about ...

Alexander Butterfield, the White House aide who inadvertently hastened Richard Nixon’s resignation over the Watergate scandal when he revealed that the president had bugged the Oval Office and Cabinet ...

He disclosed then-President Richard Nixon had a recording system in the Oval Office.

Alexander Butterfield, the Nixon aide who revealed to Congress that there was a secret taping system in the White House, died on Monday at age 99 ...

Butterfield served as a deputy assistant to Nixon from 1969 to 1973 ...