Expanded and rev. ed. of: Historical statistics of the United States, colonial times to 1970. Bicentennial ed. Washington : U.S. Dept. of Commerce, Bureau of the Census, 1975.
"Many [data] series in these volumes are continued on a regular basis with periodic updates and revisions by the agency, group, or individual responsible for the original data."--Guide to the Millennial ed.
Title from home page (viewed May 8, 2009).