Data Checked With Bureau Of Census Press Release On "Enameled Sanitary Ware", February 1932 Source: See V129
This NBER data series m02126 appears on the NBER website in Chapter 2 at http://www.nber.org/databases/macrohistory/contents/chapter02.html.
NBER Indicator: m02126
Release: NBER Macrohistory Database
National Bureau of Economic Research, Bath Tub Shipments for United States [M02126USM588NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M02126USM588NNBR/, June 30, 2015.