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

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

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

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 ...

Read more about Nixon’s resignation in TIME’s archives. Friday marks the 40th anniversary of President Richard Nixon ...

Richard Nixon’s presidency remains one of the most controversial and dramatic in U.S. history. Elected in 1968 on promises to restore “law and order,” Nixon managed to pull off some diplomatic wins ...

A tourist trail that focuses on historical connections between Ireland and America – and which treats, say, Andrew Jackson as ...

We're not ones to yuck someone's yum, but Richard Nixon's preferred combo of cottage cheese and a popular condiment is definitely not for everyone.

Alexander Butterfield, a former White House aide who exposed the recordings that revealed the Watergate scandal, has died. He ...

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