The Marvelous Land of Oz

US-only origination, and the census claim is correct: Reilly & Britton, Chicago, 1904 is the true first, with no UK or other-language edition preceding it. The trap is the title itself — the title was shortened to "The Land of Oz" within the same year, so 1904-dated copies reading "The Land of Oz" on the title page are a later state, not the first. Only "The Marvelous Land of Oz" on the title page is in contention for the first.