MobyGames: Essex Game description, box art, and credits. http://www.mobygames.com/game/sheet/gameId=1376/

Underdogs: Essex Review, information, box art, game download, and solution. http://www.the-underdogs.org/game.php?id=379

Knight Orc Home Page Fan-made resource to Level 9's adventure game 'Knight Orc'. Includes detailed description, review, maps, game, and solution. http://www.joltcountry.com/kohp/main.htm