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What do conservative commentator Pat Buchanan, North Dakota’s Democratic Sen. Byron L. Dorgan, Republican former defense chief William S. Cohen, and Washington journalists Michael Isikoff and David Corn have in common?

Not a whole lot, quite frankly.

But they’ve each been selected as featured authors for Wednesday evening’s (5:30 to 8:30 p.m.) National Press Club 29th annual Book Fair and Authors’ Night, arguably Washington’s most prestigious literary event.

Among this year’s other authors on hand to sign their latest yarns will be John Dickerson, Ron Fournier, Doug Sosnik, David Maraniss, Helen Thomas and Frederic J.