His recording of Lucky You, Lucky Me from the musical revue "Come Out to Play" (1940) is also fairly hard to come by. I do know a collector of Turner Layton's records who has it, and made a video of the record being played. Maybe he has those others too. Regarding the records, I would imagine that the publication Columbia FB Variety and Dance Band Records would verify the information. It's available at https://www.clpgs.org.uk/label-discographies.html (along with other label listings).