At Thursday’s meeting of the Commission on Chicago Landmarks, Cubs staffers were on hand to outfit supporters in the audience with buttons and T-shirts that used the same scare tactic employed by Northwestern University in its quest to tear down the former Prentice Hospital: a blatantly bogus threat to move.

“Keep the Cubs,” the shirts and buttons read, “Save Wrigley Field.”

From what? Moving to Rosemont? How dumb do they think we are?

But it, or—more likely—the mayor’s machinations, worked. After a five-and-a-half-hour session, and over the objections of 44th Ward alderman Tom Tunney, the landmarks commission unanimously approved two huge new signs for Wrigley Field: a 5,700-square-foot Jumbotron that’ll dominate from the left field wall, and a 650-square-foot “script” sign above right field, along with a “Master Sign Program” governing future advertising in the park that some commission members found uncomfortably fuzzy.