More than sixty years on, it cannot be said that the author’s wish has not come true; there must be thousands of empirical papers on the Phillips curve.
Those who pursued this thread were not discouraged by the curve often turning out to be unstable and by its basic non-existence in the long term (see A. W. Phillips, ‘The Relation Between Unemployment and the Rate of Change of Money Wage Rates in the United Kingdom’, 1861-1957, Economica, Volume 25, Issue 100, November 1958, pp. 283-299).