Apologies for the late reply to your post! I would love to see those fuzzy shots of the 54-footer. There’s nothing else in the archive. Fred Ordway (RIP) and his vocational curator Adam Johnson were very helpful in providing other model shots.
The hotel floor was lit just like the space station ceiling, only from beneath instead of from on top! As you can tell from a number of photos on the book, most sets were built some way above the studio flor in order to accommodate underlighting etc.
A number of photos that were in the Jerome Agel book have simply vanished over the years, but I guess we have to count ourselves lucky that even as much as I could find was still in existence after nearly five decades.
Watch out for the Harry Lange retrospective from Reel Art Press, which I hear will be out early next year.