From Yankees.com:
The 13-run inning was the most for the Yankees since June 21, 1945, when they scored 13 in the fifth inning of a 14-4 win at Boston. Monday marked just the third time they have scored 13 in an inning, the first at Yankee Stadium. The 11 hits in the frame are the most in a single inning by the Yankees since they did it on April 11, 1987, at Kansas City.
The club record for runs in an inning is 14, which the Yankees did on July 6, 1920, against Washington at the Polo Grounds.
But when did New Hampshire become--Such a backward wasteland of seatbelt hating crazies?...I mean, only 40 people actually live there. The others are just visitors who come for the tax-free liquor and three inches of novelty coastline. John Hodgeman on The Daily Show (1-30-07)