(Question may have been asked before, but I can't find it)

I'm curious if it's been noted as to when the very last release in the US of a 78rpm record occurred. I know they'd pretty much been phased out by the end of 1958 for labels such as Decca (at least the last Bill Haley 78 on Decca came out that year), but I also know some Golden Records/Peter Pan releases for kids continued to come out on 6-inch 78s into the 60s. So anyone know when the last legal-release 78 came off the press? I know someone did a 78 release for a Record Store Day gimmick a few years ago (I forget who) but I'm not counting those, or bootlegs.