Richard Dennis, "The Policy Preferences of the US Federal Reserve", Journal
of Applied Econometrics, Vol. 21, No. 1, 2006, pp. 55-77.

All data used in the paper are contained in the file rd-data.txt, and ASCII
file in DOS format that is zipped in the file rd-data.zip.

There are three series in the dataset, with 182 (quarterly) observations for
each series. The series are stored vertically.  The first column contains
the quarterly average of the Federal funds rate.  The second column contains
the output gap, measured as 100 times the log ratio of real GDP over the
Congressional Budget Office measure of potential output.  The third column
contains inflation in the GDP price index, measured as 400 times the log
difference in the GDP price index.  The data begin in 1955.Q1 and ends in
2002.Q2.