Just noticed I never responded to Claude’s reply to my question. So I’m finally making up for my oversight… Thanks, Claude!
Given your thoughts, I never did go to the great lengths it would have taken me to track down this book. Especially the note that it mainly deals with varieties that grow well in England.
Instead, I planted in a nursery bed last spring a variety of different apples that purportedly grow okay here on semi-dwarf to semi-standard rootstocks. Next year they’ll be planted out to their permanent locations. And then I’ll see how they do!