Some of my favorites from the online version of the exhibition:
Kubla Khan by Coleridge (if the man from Porlock hadn’t gone and interrupted him at a crucial moment)
Outside the Town of Malbork—but due to a printing error, this volume contains a different book entirely—Leaning From the Steep Slope. (All of them fictional books found in fragments in If on a winter’s night a traveler)
A concise francophone guide to English poetry by an intellectual gentleman by the name of Humbert Humbert
That famous volume of the Encyclopedia of Tlön discovered and described by Professor Borges.
Hannah Jarvis’s seminal monograph on the hermit of Sidley Park, whom she proves conclusively was the former tutor Septimus Hodge.
The manuscript of The Oak Tree: A Poem, which its author/authoress labored over through four hundred or so years (and multiple genders)
Jonathan Strange’s masterwork, The History and Practice of English Magic.
And finally—and maybe this is the funniest one of all:
A GODDAMN SAMUEL FRENCH ACTING EDITION OF THE KING IN YELLOW