Looks good, xiphophilos. First reused number was 2847 though, last one 3499 as far as I see. Most of these Vocalion reissues were records by Blind Boy Fuller and Gene Autry, others e.g. by Big Bill Broonzy, Patsy Montana and the Carter Family.
Thanks, fixbutte! For future reference, I have tried to incorporate this more detailed info into the Vocalion label bio. Could you please check if I got it right?
Done the correction to 1938. Amending a potential misunderstanding in xiphophilos' comment: Not all records on http://www.78discography.com/VOC3000.htm are from 1938, only those with a leading digit "0" added to a number that is also there without the "0". That means that e.g. numbers 03001 to 03005 were actually released in 1935 (around August) whereas 03007 (also by Gene Autry) which doubles 3007 was a previous ARC record reissued on Vocalion in 1938. The Online Discographical Project even shows an original ARC number: ME13315, meaning Melotone M 13315. It was also released on Banner 33348 (1935), Conqueror 8465 (1935), Romeo 5434, Oriole 8434, Perfect 13113 and, in 1940, on OKeh 03007.
Referring to this record here (Vocalion 03070): As the ODP list shows, number 3070 had already been used for a record by Wingy Manone And His Orchestra released in late October or early November 1935 and probably not in print anymore in 1938, so it was available for this Gene Autry reissue without the risk of confusion. ODP again lists the original ARC number, as ME60452 (meaning Melotone or Banner or Perfect 6-04-52).
These sides were definitely first issued on different ARC "dime store labels", like e.g. on Banner (already linked here), Perfect (see Discogs), Romeo and others, with cat# 6-04-52 in April 1936 (or rather late March 1936). As previously commented by me (see xiphophilos' link), Vocalion reissues of dime store issues were not released before these labels were abandoned in April 1938, then creating new catalog numbers by reusing old numbers of popular records and adding a "0" to them. Thus this record here should be corrected to 1938.
Based on the catalog nr., one would expect an October 1935 release date. But all sources I've found so far say the A side was recorded on Dec. 5, 1935. Moreover, fixbutte comments at https://www.45worlds.com/78rpm/record/3070 that all these Vocalions were from 1938.