Alexander Butterfield, the former White House aide whose testimony revealed the existence of President Richard Nixon’s secret ...

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

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

Alexander Butterfield, the White House aide who disclosed Richard Nixon's secret audio taping system, providing the "smoking gun" of the Watergate scandal that brought down the president, has died at ...

There is tape in the Oval Office,” said Mr. Butterfield, a former White House aide, in testimony that rocked the Watergate hearings and led to the president’s resignation.

Alexander Butterfield, the White House aide who inadvertently hastened Richard Nixon’s resignation over the Watergate scandal ...

Butterfield supervised the placement of a voice-activated recording system that operated at locations including the White ...