sentences:  It was briefly renamed the Billiard Room after the 1952 restoration, but became the Vermeil Room in 1957 after mining heiress Margaret Thompson Biddle bequeathed 1,575 pieces of vermeil silverware to the White House.It remained little changed as of 2010.During the 1948-to-1952 reconstruction of the White House, additional White House workspace was excavated under the North Lawn.