I'm doing some radio listening tonight. In this news special from 1944
http://ia360914.us.archive.org/1/items/Singles_And_Doubles_Singles_D-G/44-09-07_xxx_The_Fourth_Chime.mp3
is the unmistakable H.V. Kaltenborn. But what stunned me in Kaltenborn's rather lame dramatic semi-re-creation is the voice of Hitler is provided by an uncreditted Hy Averback. You'll recall him from several of Jack's shows, and if I recall, he actually used a better (and broader) German accent one of of them. He appeared as a psychiatrist visited by a Christmas-time Mel Blanc. He's also Diamond Jim Brady in the seance show with Elvia Allman.
Yhtapmys