National Geographic : 2009 Jan
• GHOSTS OF PRESIDENTS PAST are everywhere in the White House. The principal reception salon, where Pope Benedict shared an 81st-birthday cake with the President and First Lady, has been adorned in blue since Martin Van Buren dictated the color scheme in 1837. Avid bowler Richard Nixon had a single-lane alley installed in the basement in 1969. As with many such White House renovations, private contributors were called upon to foot the bills.