Harvard's own House at Pooh Corner has been restored, thanks to a concerned Extension School student and a carpenter who responded to her S.O.S.

On Sunday, student Kristen Nesselrod noticed that the door to the Winnie the Pooh house -- a nook in a tree next to the Science Center -- had been destroyed beyond repair. Distraught, she posted a flier decrying the vandalism and asking for help.

Pat Lenihan, a carpenter with KSM Interiors of Somerville, was doing some work in the nearby Littauer building and noticed the flier. He responded by building a new wooden door, which was attached on Tuesday.

During the interim, mysterious friends had left candy and other trinkets at the house, which is often decorated with a little wreath at Christmas and a miniature jack-o'-lantern on Halloween.

"Within 48 hours, Pooh had a new door," said Nesselrod, a self-described "huge Pooh fan" who is working toward her bachelor's degree at the Extension School. "It worked out perfectly. I hope someday I can bring my kids by the Pooh house and look at it."