Roger Kimball
reviews the book, also:
What Wodehouse craved was quiet and the company of his pipe, his pets and, above all, his typewriter. In 1902, when he was twenty, he published his first book, The Pothunters. On Valentine's Day, 1975, he was discovered next to all the usual accoutrements, along with the manuscript of his half-completed last novel, published as Sunset at Blandings a couple years thence. Like the gnu he wrote about in 'Unpleasantness at Bludleigh Court', he'd handed in his dinner pail, victim not of a crack shot but a heart attack.
An earlier post on the matter
here.