Five on a Treasure Island (Famous Five #1)

UK Hodder & Stoughton, London, August 1942 is the true first, and the census claim is confirmed. There is no competing US or other-language edition of the first Famous Five title from 1942 — Blyton is a British publishing phenomenon and her firsts are British imprints, so no UK-vs-US precedence question arises here. Blyton is indeed absent from the inventory; as the census note observes, she is the best-selling children's author in British history, and this is the foundation title of the series.