Series Is Presented Here As Two Variables--(1)--Original Data, 1895-1928 (2)--Original Data, 1923-1941. The Joplin District, Sometimes Called The Tri-State District, Includes Parts Of Missouri, Kansas, And Oklahoma. Data Given As Monthly Totals, Prior To 1936, Were Reduced By NBER To Weekly Averages By Dividing By The Number Of Weeks Ending On Saturday Within The Month; Beginning In January 1936, By Dividing By The Number Of Weeks Ending On Saturday Which End Through The Third Of The Next Month (See Scb, 1940 Annual Supplement, P.222, Note 4). Area Covered Is U.S.-- Joplin District. Source: U.S. Department Of Commerce, Survey Of Current Business, 1932 Annual Supplement And Successive Issues.
This NBER data series m01140 appears on the NBER website in Chapter 1 at http://www.nber.org/databases/macrohistory/contents/chapter01.html.
NBER Indicator: m01140
Release: NBER Macrohistory Database
National Bureau of Economic Research, Lead Ore Shipments for Joplin, MO [M01140US27900M526NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M01140US27900M526NNBR/, August 1, 2015.