Very cool! Even has the mandobass. I didn't realize those were around as early as 1928.
The patent drawings for Gibson's patent on the adjustable truss rod showed that the curve of the rod is the opposite of the way we've always known it, but if you look at the drawing in that catalog, it's the same way as in the patent. I wonder if that worked at all.
Then there's the "unbreakable neck" -- had to laugh at that.
