From The Shadow Out of Time by H.P. Lovecraft
Now and then certain captives were permitted to meet other captive minds seized from the future—to exchange thoughts with consciousnesses living a hundred or a thousand or a million years before or after their own ages. And all were urged to write copiously in their own languages of themselves and their respective periods; such documents to be filed in the great central archives…
The archives were in a colossal subterranean structure near the city’s centre, which I came to know well through frequent labours and consultations. Meant to last as long as the race, and to withstand the fiercest of earth’s convulsions, this titan repository surpassed all other buildings in the massive, mountain-like firmness of its construction.
The records, written or printed on great sheets of a curiously tenacious cellulose fabric, were bound into books that opened from the top, and were kept in individual cases of a strange, extremely light rustless metal of greyish hue, decorated with mathematical designs and bearing the title in the Great Race’s curvilinear hieroglyphs. These cases were stored in tiers of rectangular vaults—like closed, locked shelves—wrought of the same rustless metal and fastened by knobs with intricate turnings. My own history was assigned a specific place in the vaults of the lowest or vertebrate level—the section devoted to the culture of mankind and of the furry and reptilian races immediately preceding it in terrestrial dominance.