Thanks, but I guess I should have been more specific, I'm looking for online sources for the catalogs - libraries aren't an option and can't really fly to England to consult a college's collection. (If they offer the catalogs online, I can't figure out how to access it)
Harrods did have a catalog (or catalogue) and you can get a partial reprint of the 1929 one, but it's a little expensive and about 5 years later than what I'm after.
edit:
To answer my question, they sort of let you look at the old Kays Catalogs at
http://www.worldofkays.org/website/search
But it's by separate images, not the catalog in a PDF and the images are too tiny for me to read.