Series Is Presented Here As Two Variables--(1)--Original Data, 1873-1890 (2)--Original Data, 1890-1892. No.1 Railroad Scrap Is Shown Instead Of No.1 Wrought For Philadelphia Beginning September 18, 1890. Source: Weekly Issues Of Iron Age
This NBER data series m04142b appears on the NBER website in Chapter 4 at http://www.nber.org/databases/macrohistory/contents/chapter04.html.
NBER Indicator: m04142b
Release: NBER Macrohistory Database
National Bureau of Economic Research, Wholesale Price of Scrap, No. 1, Railroad for Philadelphia, PA [M0442BUS37980M290NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M0442BUS37980M290NNBR/, November 27, 2015.