I am not forgetting about the recording ban. We will have to agree to disagree on this for now. We do seem to agree that broadcasts were a significant source of material for V-Discs. We also agree that there were original sessions made for V-Disc, utilizing the union's V-Disc exception. Our disagreement is over the extent to which that course was pursued compared to other approaches. Pre-ban recordings were also donated, but were almost never the commercially issued takes. For reasons that should be relatively obvious, it was easier for the V-Disc program to work with existing recordings than to make their own.
You must not forget that there was the first Recording Ban that started on Aug 1, 1942 and lasted until Nov 11, 1944 for RCA Victor and Columbia (Decca had settled in Sep 1943, the newly founded Capitol in Oct 1943). That means that most musicians were prevented from making commercial recordings whereas V-Disc sessions were allowed. As far as I see, the large majority of V-Disc recordings come from such V-Disc sessions (even from after Nov 1944) and from broadcasts (mostly NBC).
Not the place for a lengthy discussion here, but relatively few of the V-Discs were newly recorded, and almost none of them were made using the mxs that the big companies used on their own recordings. You can track all this in the Richard Sears book on V-Discs, if you can find a copy. Some better libraries have it.
The vast majority of V-Discs are made with alternate takes from the libraries of the big record companies or from broadcasts. It's hard to track them thoroughly because the V-Disc program re-numbered the matrixes. Nevertheless, the alternate takes are quite appreciated by the collecting community, as are the original, mainly jazz, recordings that were made for the V-Discs specifically. There has been, and still is, a lot of misinformation circulating in discographical references re: the source of recordings on the V-Discs. Again, I refer you to Sears for the answers. He is THE MAN where V-Discs are concerned.
Other than most later V Disc records, this one was not newly recorded but taken from the commercial recordings for RCA Victor's sub-label Bluebird (as entered into the notes now).