Data Refer To Aaa Grade Bonds. Data Through 1962 Include: Hartford, Connecticut -- 18 Year 3.5% Bonds; Indianapolis, Indiana -- 25 Year 3.625% Bonds; Maryland -- 14 Year 3% Bonds; Milwaukee, Wisconsin -- 20 Year 3% Bonds; New York State -- 25 Year 3% Bonds (See Moody'S, July 16, 1962). Source: Moody'S Municipal And Investment Manual, 1961; Successives Issues Of Moody'S Bond Survey Thereafter.
This NBER data series m13043 appears on the NBER website in Chapter 13 at http://www.nber.org/databases/macrohistory/contents/chapter13.html.
NBER Indicator: m13043
Release: NBER Macrohistory Database
National Bureau of Economic Research, Yields On Municipal Bonds, Highest Rating for United States [M13043USM156NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M13043USM156NNBR/, July 3, 2015.