Usborne published five more books focusing on Wodehouse. "Vintage Wodehouse" (1977) is an anthology which, among many other items, includes extracts from some of the Berlin broadcasts. "Wodehouse Nuggets" (1983) is a collection of Wodehouse quotations and vignettes, with illustrations from the "Strand Magazine". "The Penguin Wodehouse Companion" (1988) includes a biography, synopses of all the novels and pen-portraits of the major characters. "After Hours with P. G. Wodehouse" (1991) is another anthology of the author's writings. "Plum Sauce" (2002) is an illustrated companion that draws on much of Usborne's earlier material. Reviewing it, "The Philadelphia Inquirer" called Usborne "the world's leading Wodehouse expert" and recommended readers to "grab" the book.