Release: NBER Macrohistory Database
Series Is Presented Here As 3 Variables: (1) Original Data, 1913-38; (2) Original Data, 1932-43. See V093 Source: Files Of Engineering News-Record
This NBER data series m02093b appears on the NBER website in Chapter 2 at http://www.nber.org/databases/macrohistory/contents/chapter02.html.
NBER Indicator: m02093b
National Bureau of Economic Research, Contracts for Streets, Roads, and Bridges for United States [M0293BUSM398NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/M0293BUSM398NNBR, August 25, 2019.