Columnist Hints Book Was Source That Led to Use of C.I.A. Officer's Name

From The New York Times:

WASHINGTON, Aug. 1 - One of the most puzzling aspects of the C.I.A. leak case has had to do with the name of the exposed officer. Why did the syndicated columnist Robert D. Novak identify her as Valerie Plame in exposing her link to the C.I.A. in July 2003 when she had been known for years both at the agency and in her personal life by her married name, Valerie Wilson?

Mr. Novak offered a possible explanation for the disconnect on Monday, suggesting in his column that he could have obtained Ms. Wilson's maiden name from the directory Who's Who in America, which used that name in identifying her as the wife of Joseph C. Wilson IV, a former ambassador.