Died During Production: Sunset At Blandings was published posthumously, only half-finished.
Recycled Script: Something New, the original American printing of Something Fresh, recycled a sequence from the Psmith series involving red paint and shoes.
What Could Have Been: Sunset At Blandings includes some of Wodehouse's unwritten story ideas, including a Jeeves and Wooster crossover with Bertie and friends visiting the Castle.
Write What You Know: Wodehouse's uncle and older brother both served in the Hong Kong police force, like George Emerson in Something Fresh.
The 2013 Blandings TV series provides examples of:
Adaptation Species Change: Downplayed; the Empress remains a pig, but of a different breed (Middle White rather than the black Berkshire of the books).
The Other Darrin: Tim Vine replaces Mark Williams as Beach in the second series.