Data Represent Average Of Four Or Five Weeks In The Month. Weeks Ending On The First, Second, Or Third Of The Month Are Included With The Preceding Month. Source: Dun And Bradstreet, Incorporated, Business Trend News, "Weekly Failures".
This NBER data series m09077 appears on the NBER website in Chapter 9 at http://www.nber.org/databases/macrohistory/contents/chapter09.html.
NBER Indicator: m09077
Release: NBER Macrohistory Database
National Bureau of Economic Research, Number of Business Failures With Liabilities of One Hundred Thousand Dollars and Over for United States [M09077USM234NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M09077USM234NNBR/, July 4, 2015.