Among the stoutest defenders of "Unfit for Command: Swift Boat Veterans Speak Out Against John Kerry," the best-selling book arguing that Mr. Kerry lied about his record of service in Vietnam, is the columnist Robert Novak.

In his syndicated columns and on the CNN program "Crossfire," Mr. Novak has lauded the book and referred to veterans who criticize Mr. Kerry - most notably John E. O'Neill, the book's co-author - as "real patriots."

Unmentioned in Mr. Novak's columns and television appearances, however, is a personal connection he has to the book: his son, Alex Novak, is the director of marketing for its publisher, the conservative publishing house Regnery.

In a telephone interview, Robert Novak said he saw no need to disclose the link.

"I don't think it's relevant," he said. [Emphasis added.]