Release: NBER Macrohistory Database
Data Are For Monthly Averages Of The Weekly Yields Index Given In "The Weekly Bond Buyer For The Capital Market Investor", Published By The Bond Buyer, New York City. Source: U.S. Bureau Of The Census, Business Cycle Developments, July 1964 And Subsequent Issues.
This NBER data series m13050 appears on the NBER website in Chapter 13 at http://www.nber.org/databases/macrohistory/contents/chapter13.html.
NBER Indicator: m13050
National Bureau of Economic Research, Yields on Municipal Bonds, Twenty Bond Average for United States [M13050USM156NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/M13050USM156NNBR, October 25, 2016.