Release: NBER Macrohistory Database
This Series Consists Of Prices For Cylinder Oil, Pennsylvania Refineries, 600 Flash, Steam Refined, Filtered. No Quotation For July, 1926. Annual Figure Is The Sum Of 11 Months. Source: For 1918-1925, Directly From Bls; 1926-1940, Bls Bulletins And "Wholesale Prices."
This NBER data series m04162 appears on the NBER website in Chapter 4 at http://www.nber.org/databases/macrohistory/contents/chapter04.html.
NBER Indicator: m04162
National Bureau of Economic Research, Wholesale Price of Lubricating Oil, Refineries for Pennsylvania [M04162US000PAM264NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/M04162US000PAM264NNBR, November 19, 2017.