Hur D & D-stil fantasibok hade en väska med en hel värld inne i den?

Eventuellt Nightwings (1968), av Robert Silverberg.

Nightwings är den första i en trilogi av noveller, de två andra är Perris Way (1968) och To Jorslem (1969). Dessa tre verk samlades senare in i en enda roman i tre avsnitt, även titeln Nightwings.

Sammanfattning av plot:

In a decadent and caste-based future, humanity is divided into guilds, each having a specific job to do. The members of some guilds appear to have undergone genetic engineering, for instance, the Fliers' ability to fly and the Watchers' ability to use their mental capabilities to watch distant stars.

The main character in the novella is a Watcher whose mission is to watch the skies with some sophisticated equipment and to inform the Defenders in the event of an alien invasion. Along with a young Flier girl and a Changeling (who belongs to no guild), he visits the old city of Roum (suspected previously to be called Rome), and becomes entangled in events including the possibility of invasion.

Apart from Roum, only two other great cities are mentioned, Jorslem (Jerusalem) and Perris (Paris), but their greatness is relative, as they only have a few thousand inhabitants.

Bitt mer Sci-Fi än fantasi, men det har ett objekt som heter "overpocket" som

"...was infinitely capacious; the contents of a world, if need be, could be stuffed into its shriveled gray maw, and still it would be no longer than a man's hand. Gormon took from it bits of machinery, reading spools, an angular thing of brown metal that might have been an ancient tool, three squares of shining glass, five slips of paper—paper!—and a host of other relics of antiquity."

~ från Google Books" utdrag av boken .