Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Index 1923-1925=100, Seasonally Adjusted

Frequency:  Monthly

Notes:

Series Is Presented Here As Two Variables--(1)--Seasonally Adjusted Data, 1919-1942 (2)--Original Data, 1939-1964. The Following Variables From This Series Are Considered Roughly Comparable To This Segment. This Index Of 1923-1925=100 Was Superceded By An Index On The Base 1939=100 (Not Used) That In Turn Was Seperceded By The Series That Follows Here, Following The 1949 Revision Of The Bls Employment Data After Adoption Of The 1945 Standard Industrial Classification. The Series Of Production Worker Employment In Machinery Production (NBER Series 08018) Presented Below Is Believed To Be Roughly Comparable To The Index Shown Through September 1942. Source: Federal Reserve Board, Federal Reserve Bulletin, October 1938; October 1939; Monthly Issues Thereafter.

This NBER data series m08018a appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.

NBER Indicator: m08018a