Data Was Discontinued After February 1940 Because It Was No Longer Considered Reliable. Source: Record Book Of Business Statistics, Ii, P. 41; Survey Of Current Business, 1932 Supplement And Successive Issues.
This NBER data series m01171 appears on the NBER website in Chapter 1 at http://www.nber.org/databases/macrohistory/contents/chapter01.html.
NBER Indicator: m01171
Release: NBER Macrohistory Database
National Bureau of Economic Research, Woodworking Machinery Shipments, Value for United States [M01171USM174NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M01171USM174NNBR, May 4, 2016.