Brave New World & Brave New World Revisited by Aldous Huxley. Harper Perennial Classic. Harper and Row. (1965) 4 1/2" x 7 1/4" xxi, 199 (BNW)  97 (BNWrev) pages Hardcover with dust jacket. DUST JACKET: Light wear and bumping mostly to the top and bottom of the spine. dj has some very tiny tears on the bottom of the spine.  Otherwise, no clips, other tears, unusual folds or missing pieces. Not price-clipped. With original price of $2.45. BOOK: Bright gilt lettering on spine and front cover. Light cover edge wear. No previous owner markings.  No tears, folds or creases to pages. Binding is tight with no looseness to pages. Not ex-library, not remaindered and not a facsimile reprint. For sale by Jon Wobber, bookseller since 1978. sLH20a

I can't confirm. but this may be the first publication of Brave New World & Brave New World Revisited together.