This is a lot of 5 different 2nd edition Advanced Dungeons & Dragons Dungeon Master's Guides and Rules Supplements published by TSR in the early 1990s. They are: Campaign Sourcebook and Catacomb Guide # 2112; Arms and Equipment Guide # 2123; Monster Mythology # 2128; Creative Campaigning # 2133; and The Complete Book of Villains # 2144.
The books have a slight roll and don't lay completely flat. They are otherwise clean and solid in EX condition.
Thank you.