Actually I find all four of these products interesting...
WWP 16700 Sword & Sorcery: Adventure Atlas Of Stone Keep $15.95
Sword & Sorcery: Adventure Atlas Of Stone Keep
The first of the Adventure Atlas series, Stone Keep adds a new dimension to roleplaying. Nine 11" x 17" full-color grid maps detail a keep from outer walls to interior layout. A 16-page booklet describes special features and supplies rules 100% compatible with 3rd Edition and the D20 System.
WWP 16701 Adventure Atlas: Dragon's Lair $15.95
Adventure Atlas: Dragon's Lair
The second installment in the Adventure Atlas series, Dragons Lair adds a new dimension to roleplaying, introducing nine 11" x 17" full-color maps detailing a dragons hideaway, a cavernous pit formed by the collapse of an ancient ruin.
WWP 16711 Relics & Rituals: Excalibur $34.99
Relics & Rituals: Excalibur
Draw the sword from the stone. Quest for the sacred relics of your faith. Defeat all comers in a tournament of arms. Slay giants and dragons. Command the sorcery of Merlin or Morgan le Fay. Forge your own Camelot your own legend! Relics & Rituals: Excalibur is a genre sourcebook, blending the trappings of Arthurian myth with the familiar ruleset of the d20 System. New spells, magic items, prestige classes, and more can be used to build an entirely Arthurian-style campaign, or to add elements of chivalry and courtly romance to any existing d20 campaign.
WWP 16721 Advanced d20 Compendium $34.99
Advanced d20 Compendium
The Advanced d20 Compendium is a companion volume to the Players Handbook and other d20 core rulebooks, providing a wealth of new rules options, plus expanded classes, new skills, new combat systems, and more.
I think the price tags give some idea on size and format...
Later!