To save time and money while building military bases and offices, the U.S. Government turned to the United States Gypsum corporation for a product dating from 1916 called sheetrock. Before the war, American homes were routinely plastered inside—a painstaking process that could consume weeks where no other trade could work inside the house. Despite the expense and labor intensity of plastering, and the successful use of sheetrock in most of the buildings at the Chicago's World's Fair of 1933-34, sheetrock had not caught on. But the urgencies of wartime construction changed all that (Gellner, 2003). Colonial Hills and Dales was one of the first sites in the nation to utilize sheetrock rather than plaster construction.