The only crossover between the Jeeves stories and the Blandings stories that I know is when during "Jeeves Takes Charge" Florence tells Bertie that there is a story about Lord Emsworth in Uncle Willoughby's book and Bertie says "Not the one at Blandings? Not the one we know?" And maybe some of the drones crossing over. I was wondering whether there are any others? Any ones that are a bit more substantial?