Source: 1913-1920: Directly From Bls; 1920-1943: Bls Bulletins
This NBER data series m04176 appears on the NBER website in Chapter 4 at http://www.nber.org/databases/macrohistory/contents/chapter04.html.
NBER Indicator: m04176
Release: NBER Macrohistory Database
National Bureau of Economic Research, Wholesale Price of Condensed Milk, Sweetened for New York [M04176US000NYM282NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M04176US000NYM282NNBR, February 8, 2016.