The main source I will use for my version of the special will be The Editdroid DVD. Then I will use 4K77 for the sections taken from A New Hope, and the official Blu-ray for the Vader widens the search scene.
I can save you a little time: the Blu-Ray “Vader widens the search” scene isn’t the same take as the one used in the Holiday Special.
Thanks, I already discovered that for myself though. I should alter that opening post.