Dino's Ultima Page - Ultima 7 Part 2: Serpent Isle

A Who's Who of Serpent Isle is hosted on Houston Dragon's website. It shows in detail the many characters in Ultima 7, as well as their portraits and their role.

Serpent Isle sections on websites can be found:

Here at the Ultima Web Archive
Here at Bootstrike
Here (French) at La Legende d' Ultima
At Arthuris Dragon's Ultima Maps and Tables with some very good maps
At Avocet Dragon's Journey to Sosaria (it's in frames so I can't conveniently link directly to the Serpent Isle section)
Here at the Other Codex
Here at Auric's Ultima Moongates
At the Serpent Isle Wiki at StrategyWiki

World maps of Serpent Isle as on the cloth or paper map can be found:

Maps of the actual world as it is in the game are:

A map of Gorlab Swamp can be found:

Maps of the Dark Path, which is the central point of the Serpent Gates, can be found:

Here (text) at Arthuris Dragon's Ultima Maps and Tables
Here (relatively large .jpg image turned 90 degrees anticlockwise) at the home of the Serpent Isle original plot docs
At some other walkthroughs; see the walkthroughs section below for links to walkthroughs

You can download Serpent Isle music:

A patch for general midi compatibility is on the Ultima Online Archive.

The original plot of Serpent Isle, complete with cut-out parts, related to Moonshade and Mad Mage Isle has been found.

Also, the following topics at the Exult forum contain details about omitted parts of the plot:

There is a gallery of box covers and in-game screenshots at La Legende d' Ultima.

This is where to find box cover art:

Exult is the engine to use to run Ultima VII (Serpent Isle included) under virtually any modern platform. Read my review for more information.
Ultima VII: Chronicles of Batlin is a new game using the Exult engine where you play as Batlin, and it takes place before the Avatar came upon Serpent Isle.
Ultima 7: Blackrock is a project using the Exult engine which aims to remake The Black Gate and Serpent Isle, adding the long-forgotten Serpent Isle original plot and elaborating on elements in The Black Gate that could have been expanded further.