Release: NBER Macrohistory Database
Revisions May Be Found In Census Bureau Series M3-1.2 For 1961-1970. Source: U.S. Bureau Of The Census, "Manufacturers' Shipments, Inventories, And Orders: 1947-1963", Series M3-1, Revised, October 1963;"Business Statistics, 1965", Biennial Supplement To Survey Of Current Business; Latest Month Is From Series M3-1, Same Title, Monthly.
This NBER data series m06115 appears on the NBER website in Chapter 6 at http://www.nber.org/databases/macrohistory/contents/chapter06.html.
NBER Indicator: m06115
National Bureau of Economic Research, Manufacturers' Unfilled Orders, Machinery Except Electrical, Total for United States [M06115USM144NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/M06115USM144NNBR, September 19, 2020.