Ed McCurdy did indeed sing "The Miracle of the Wheat" perhaps earlier than the '60's. Probably more like the mid-fifties. All I can distinctly remember is a snippet from the chorus:

"Hear the glory of the story: the miracle of the wheat" (x2)

The morning DJ on WKRC-AM in the mid-sixties was a fellow named Stan Matlock. I remember him saying that he had made a tape from the last source available for Miracle of the Wheat. He used to play it around Christmas - I believe the song had a Christmas theme.

Karl