Release: NBER Macrohistory Database
Series Is Presented Here As Two Variables--(1)--Original Data, 1939-1947 (2)--Original Data, 1947-1969. Source: U.S. Department Of Commerce, Office Of Business Economics, "Manufacturers' Sales, Inventories, New And Unfilled Orders, " Unpublished Tabulation Of July 1952.
This NBER data series m06106a appears on the NBER website in Chapter 6 at http://www.nber.org/databases/macrohistory/contents/chapter06.html.
NBER Indicator: m06106a
National Bureau of Economic Research, Manufacturers' Unfilled Orders, Durable Goods Industries for United States [M0606AUSM027NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/M0606AUSM027NNBR, July 19, 2018.