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Late Show with David Letterman

David Letterman volunteers for Habitat for Humanity

David Letterman volunteers for Habitat for Humanity

Retired "Late Show" host David Letterman went to New Orleans to help build a house for someone needing a boost.

Volunteer Kate O'Leary sent WWL-TV a selfie of herself and the heavily bearded Letterman in front of a house being built by the New Orleans Area Habitat for Humanity.

O'Leary said, "He likes to help out with projects like that, and keep it on the down low."

The nonprofit group's chief advancement officer, Marguerite Oestreicher (AY-striker), confirmed that Letterman worked on construction Friday and Saturday, and that O'Leary is a volunteer.

She says Letterman is "just like...