Historic Consumer Price Index, 1800-1998 (UMich)

Annual CPI, 1800-1912, copied from Historical Statistics of the United States
Monthly CPI, 1913-June 1998, using Bureau of Labor Statistics tabulation
Both use the base 1967=100
Updates to the 1967 base year were suspended after June 1998;
Historic CPI Data (Base=1982-84) is available on the BLS web site on a monthly basis since 1913