Eva Posin has put together a wonderful collection on YouTube.
See (1) ALL BING CROSBY WHISTLING PARTS from his recorded songs chronologically - YouTube

1947 is now available

Bing Crosby - The Hollywood Years. Episode 15 - 1947 - YouTube

Sounds like the Judy Room might be helpful to you.
The Judy Room – Celebrating the life and career of Judy Garland since 1999!

The song "The House Jack Built for Jill" was written to be used in the Crosby film "Rhythm on the Range" but was deleted from the final version.

i should have explained that it was TCM in the USA.

I don't know whether you are aware but Jon Oye has added over two dozen newly-scanned items to his Bing Memorabilia page, including the following: Several movie stills, representing Stagecoach, College Humor, and all of the Road films; unique fan snapshots; an ink blotter; a signed photo of a young Bing; several ads, promotional photos, and sheet music. Well worth looking at. Here's the link to his page: https://derbingle.blogspot.com/p/bing-crosby-memorabilia-advertising-and.html

Ian, you ask how Bing and Vera related to each other. We have this recollection.

"As far as my memories of Bing are concerned, I could not possibly go into all the days we spent together rehearsing, but the one thing that did stick in my mind was when we had tea, he had a huge piece of fruit cake and a large lump of ice-cream with it! Probably a good combination, but not one we were familiar with"
(Vera Lynn, in a letter dated March 27, 2007 to Crosby fan Trevor Wagstaff.)

Quite a few of the sitcom shows were shown in the UK on what was the new BBC2 channel at the time.

Re David Duncan, look at David Duncan: Actor, Extra and TV Presenter - New South Wales, Australia - StarNow

No, Grace Kelly was not dubbed in "High Society". "High Tor" has not been released as a film in different countries.

Graham, there will be a review of the book in the spring issue of BING magazine due out next month. Re YouTube, search against "Bing Crosby Peggy Lee" and you'll see what you are seeking.

Ron1972 is so right when he says that there was so much more we could have said. Wish we had looked at Bing's recordings of the same songs over the years (e.g. Where the Blue of the Night, June in January, Stardust etc.). Perhaps next year. I was annoyed that the sound of the recordings I played did not come over too well. They sounded loud my end but it wasn't picked up.