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 ...

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

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 ...

Alexander Butterfield oversaw the installation and operation of a voice-activated recording system in the Nixon White House ...

The White House aide who revealed that Richard Nixon had secretly recorded his conversations as president has died. Alexander Butterfield was 99.

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

As a deputy assistant to the president, he supervised Richard Nixon's taping system that had been secretly placed in four ...