Although the Federal Reserve has become more open over the years, it is still one of the most mysterious Washington institutions. These photos from files or provided by the Federal Reserve are the people, who hold such power over each American's pocket book: from top left, Chairman of the Federal Reserve Ben Bernanke; Federal Reserve Governor Susan Bies; Federal Reserve Vice Chairman Donald Kohn; Federal Reserve Governor Kevin Warsh; Federal Reserve Governor Randall Kroszner; Michael Moskow, president of the Federal Reserve Bank of Chicago; Federal Reserve Governor Frederic Mishkin; Timothy Geithner, president of the Federal Reserve Bank of New York; William Poole, president of the Federal Reserve Bank of St. Louis; Cathy Minehan, president of the Federal Reserve Bank of Boston; Thomas Hoenig, president of the Federal Reserve Bank of Kansas City.