The Lemmings Compendium
Features walkthroughs, level codes, downloads and links for the games.

Lemmings forever
With downloads, information, hints and a survey.

Lemmings Fan Page
Information about each of the games, a level editor, hints, cheat codes, and solutions for most of the games.

Your Sinclair Rock 'n' Roll Years
Reviewed by Andy Hutchinson, [91°]. Also includes box art and screenshots.

Oh No! The Lemmings Games
Fan page for the games with codes, downloads, walkthroughs, artwork, and zoological information..

Level 80
The level codes for every level on Fun, Tricky, Taxing and Mayhem for the PC

GameSpot: 3D Lemmings
Offers review, downloads, cheats and hints, and screen shots.

The Lemmings Games
A chronology and history, cheats, downloads, artwork, and biological information.

Wikipedia: Lemmings
Encyclopedia article on Lemmings.