All that can presently (March 2015) be gleaned about by internet searching is that Len Gray is the one-off composer of You're the Only One That I Love (1928).
Surfers are welcome to contribute information about this composer.
This list is arranged in chronological order and contains 1 work by Len Gray. It does not claim to be complete and represents only the number of items located.
You're the Only One That I Love (1928) Words by: Clarence Williams