Source: William Howard Shaw, "Value Of Commodity Output Since 1869" (National Bureau Of Economic Research, 1947) Pp. 57, 69, 75-76
This NBER data series a02234a appears on the NBER website in Chapter 2 at http://www.nber.org/databases/macrohistory/contents/chapter02.html.
NBER Indicator: a02234a
Release: NBER Macrohistory Database
National Bureau of Economic Research, Ships and Boats Built For Domestic Use for United States [A0234AUSA398NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/A0234AUSA398NNBR/, July 28, 2015.