Eidolon: City in the Sky (1992)

From the publisher:

Eidolon floats in the sky above the northern coast of the great continent of Emer. This city is a place of magic and wealth. Far below glittering Eidolon, straddling the delta of the Sharhya River is Sel-kai, city of canals. Dozen of islands are linked by bridges spanning the narrow waterways. Anything ... anything ... can be bought or sold in Sel-kai City.

Eidolon, City in the Sky CONTAINS:

* A 22" x 34" full-color hand-rendered map of Sel-kai, the sprawling canal city beneath Eidolon.
* A full-color map of Eidolon, the Sky-city.
* Descriptions of more than 250 businesses in Sel-kai and Eidolon, many with layouts, and all cross-indexed.
* Detailed 'neighborhood' maps, showing bridges, alleys and shops.
* Eight complete adventures.
* Background on Sel-kai and many important personalities.
* A detailed timeline advances history in the Shadow World three years, and supplies 'upcoming events' in Sel-kai: important changes while the players adventure
* Stats for the famous Skyships of Eidolon.
* Price lists and glossary of valuable materials.
* Government information; rules for crimes and punishment.
* Secret organizations, both good and evil
* An Elven Dictionary, Eidolon Alphabet, drugs, poisons and diseases charts - including many illnesses indigenous to the Sharhya Delta.