Source: Purchasing Agents Association Of Chicago, Combined Statistical And Analytical Report Of The Busines Survey Committee (Monthly); Unpublished Tables Furnished To V. Zarnowitz And G. H. Moore. Data Represent The Percentage Reporting Slower Deliveries Plus 1/2 Of Percentage Reporting "No Change."
This NBER data series m06006 appears on the NBER website in Chapter 6 at http://www.nber.org/databases/macrohistory/contents/chapter06.html.
NBER Indicator: m06006
Release: NBER Macrohistory Database
National Bureau of Economic Research, Vendor Performance, Percent Reporting Slower Deliveries for United States [M06006USM156NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M06006USM156NNBR/, August 2, 2015.