Klein also served as Press Secretary for three of Nixon's campaigns and editor of the Copley Newspapers in San Diego before and after his time in the White House.
He died aged 91 on July 2, 2009, after suffering a cardiac arrest at his home in La Jolla, California, according to reports from his family.
There was controversy about this part of his career because the Copley Newspaper chain has been rumored to be associated with the Central Intelligence Agency since 1947.
In 1946, while still connected to the Post-Advocate and the Copley Newspapers, Klein was contracted to be the press agent for Richard M. Nixon's campaign for California's 12th congressional district seat.
He was chosen to become Nixon's press agent for the California United States Senate seat campaign, which was won against Helen Gahagan Douglas in 1950.
After the inauguration in 1969, Klein was chosen to be the new Communications Director for the Executive Branch, a post he held until his resignation on July 1, 1973.
Klein authored the book Making It Perfectly Clear, an Inside Account of Nixon's Love-Hate Relationship with the Media, released by Doubleday in 1980, ISBN 0-385-14047-9.
[3] The second, in San Diego, was by Tom Johnson, former Los Angeles Times publisher and CNN executive.