1950

• William J. Levitt expands his mass-production techniques of building identical boxlike houses in Levittown, New York, assembled by crews using precut materials, thus accelerating the rush to suburbia.
• The White House is gutted and remodeled during the first year of a three-year project. Only the outside walls remain unchanged during the rebuilding.
• New York's United Nations Secretariat building, featuring all-glass east and west facades, is completed to provide offices for the UN's thirty-four hundred employees on land overlooking the East River.
• The "Sun House" at Dover, Massachusetts, heated solely by stored-up rays of the sun and erected by the Massachusetts Institute of Technology, is occupied in comfort by a New England family throughout the winter, opening up the possibilities of solar heat for house warming.
• Miss Clairol hair coloring is introduced; it takes only half the...