1935-36 Data Are Irregular; End Of Quarter Prices Were Used For 1937-1955. Note That In 1964 The Series Was Revised To Reflect The Reclassification Of Home Purchase Costs From Service To Durable Commodities. The Series Was Revised Backwards. Data Are Comparable According To The Survey Of Current Business Supplement, 1965 (Business Statistics). Source: Bls Mimeographed, Undated Release, "Consumer Price Index For Urban Wage Earners And Clerical Workers, U.S. City Average: Durable Commodities--Series K-2, " For 1935-04/1966; Monthly "Consumer Price Index" Thereafter. Also In Survey Of Current Business. This NBER data series q04186 appears on the NBER website in Chapter 4 at http://www.nber.org/databases/macrohistory/contents/chapter04.html. NBER Indicator: q04186

Annual Figure For 1968 Is Based On Three Months (January- March). Source: 1947-1964, Business Statistics, The Biennial Supplement To The Survey Of Current Business, 1965; 1966 And Following; Survey Of Current Business, Current Issues. This NBER data series q04194 appears on the NBER website in Chapter 4 at http://www.nber.org/databases/macrohistory/contents/chapter04.html. NBER Indicator: q04194