Series Is Presented Here As Two Variables--(1)--Original Data, 1913-1934 (2)--Original Data, 1933-1941. Source: 1913-1920 Data Were Direct From Bls (#469 Mills File); 1921-1934 Data Are From Bls Bulletins And "Wholesale Prices."
This NBER data series m04179a appears on the NBER website in Chapter 4 at http://www.nber.org/databases/macrohistory/contents/chapter04.html.
NBER Indicator: m04179a
Release: NBER Macrohistory Database
National Bureau of Economic Research, Wholesale Price of Aluminum for New York [M0479AUS000NYM267NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M0479AUS000NYM267NNBR/, October 8, 2015.