The union representing airline mechanics has been striking against Minnesota-based Northwest Airlines for two months now, with little to show for it. But the union has begun a strange strategy of attacking individual members of Northwest’s board of directors on unrelated fronts. One of the oddest attacks: a pamphlet distributed as presidential historian Doris Kearns Goodwin was releasing her latest book, calling her “the great prevaricator” (a reference to Goodwin’s plagiarism scandal two years ago) and urging air travelers not to buy her books. Yes, Goodwin is a member of the Northwest board. But a real policy player at the airline? Alex Beam thinks not…