Nice to see that EH's own channel has uploaded the complete pilot edition from his 1969 ATV series. Guests are Jose Feliciano, Barbara Eden (I Dream of Jeannie), Dionne Warwick, and Tom Jones. Presumably made at Elstree as its a UK production crew in the credits.
As are 5 others. They might skip them; chances they will apply chroma dot colour recovery seem very slim to me.
It seems a bit unlikely that Dorsey's agents would have the actual master tapes.
That would be a delightful turn-up if Engelbert kept his own copies that nobody knew about.
Well... it would be, but I'd say it was pretty unlikely. Very costly with no possible use at the time. Don't know of any examples either. A "domestic" format, that might be possible, but that would be b/w so unlikely to beat the telerecording except perhaps for sound quality.
Sound recordings of the 1972 series with the Young Generation, now those would be useful to replace the German dubbing.