Both articles conclude that the Fed’s commitment to low inflation helped convince investors to hold long-term bonds at low rates in the 1940s and 1950s. (A similar dynamic would work in the Fed’s favor today.) The rate-pegging policy finally collapsed because the money creation associated with buying Treasury securities was generating inflationary pressures.
Of course, in a deflationary situation, generating inflationary pressure is precisely what the policy is trying to accomplish.