After putting in order all my gaming stuff, here's a picture of the gaming shelf. There's more material classified and stored in rigid type folders but it doesn't look as good as this.
From left to right: the World of Greyhawk (1980), the WoG & Glossography (1983), AD&D Dungeon Master Guide (1979), AD&D 2e PHB, DM and Monstrous Manual, AD&D 2e Complete Bard's Handbook, AD&D 2e Celts Campaign Sourcebook, AD&D 2e The Complete Books of Villains, AD&D The Complete Books of Elves, AD&D Against the Giants - The Liberation of Geoff (1999), some Dragon and Dungeon magazines, 3.0e PHB, DM and MM, 3.0e Book of Vile Darkness, 4 boxes of plastic miniatures and 3 boxed sets (The City of Greyhawk, From the Ashes and Planescape Campaign Expansion), AD&D 2e Volo's Guide to the North, AD&D Waterdeep and the North, AD&D 2e Campaign Guide to Myth Drannor, Ars Magica 5e, Labyrinth Lord Advancd Edition Companion and some books of drawing techniques. On top there's a bag from the English Heritage with a poster of Stonehenge waiting to put in a frame.
From that lot are missing the 3.5e books (PHB, DM, MM and the Expedition to the Ruins of Greyhawk module) and another box of miniatures, that were in the gaming backpack the moment I took the picture, and the Labyrinth Lord Revised Edition that is on its way.