Source: Computed By Dividing NBER Series 05131 (Ratio Of Manufacturing And Trade Inventories Plus Manufacturers' Unfilled Orders, Total, Excluding Machinery And Equipment And Defense Products) By Series 06102 (Total Manufacturing And Trade Sales)
This NBER data series m05132 appears on the NBER website in Chapter 5 at http://www.nber.org/databases/macrohistory/contents/chapter05.html.
NBER Indicator: m05132
Release: NBER Macrohistory Database
National Bureau of Economic Research, Ratio of Manufacturing and Trade Inventories Plus Manufacturers' Unfilled Orders To Manufacturing and Trade Sales, Total for United States [M05132USM163SNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M05132USM163SNBR/, November 30, 2015.