The availability of data from the 1950 Cen­sus of Population and the unexpected continua­tion of the high postwar birth rates call for changes in the set of projections of the popula­tion of the United States which were prepared by the Bureau of the Census early in 1950 and published in "Illustrative Projections of the Population of the United States: 1950 to 1960," Cur­rent
Population Reports, Series P-25, No. 43.