Source: Bls Release, "Consumer Price Index-U.S.": All Items, 1913- 1960, Series A; Bcd, February, 1967 For 1961-1965; March, 1968 For 1966-February, 1968. This NBER data series m04220 appears on the NBER website in Chapter 4 at http://www.nber.org/databases/macrohistory/contents/chapter04.html. NBER Indicator: m04220