Four Jeeves stories told by Bertie Wooster staying in New York to avoid the wrath of his Aunt Agatha: four stories told by Reggie Pepper. Six of these eight stories turn up again in Carry on, Jeeves (1925), two of them, which had been told by Reggie Pepper, now recast as Bertie/Jeeves stories, set in England.

In fact Jeeves had first appeared - though only two lines of him - in Extricating Young Gussie in The Man with Two Left Feet.

Source: Richard Usborne. Plum Sauce. A P G Wodehouse Companion.