Source: 1946-56, Dept. Of Commerce, "U.S. Income And Output, " Supplement To "Survey Of Current Business, " 1958; 1957-63, "Survey Of Current Business, " July 1962, 1964.
This NBER data series a02258 appears on the NBER website in Chapter 2 at http://www.nber.org/databases/macrohistory/contents/chapter02.html.
NBER Indicator: a02258
Release: NBER Macrohistory Database
National Bureau of Economic Research, Expenditures For Petroleum and Natural Gas Well Drilling, Constant Dollars for United States [A02258USA381NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/A02258USA381NNBR, February 14, 2016.