EABA Road to Armageddon, by Phalanx Game Design. Post-apocalypse adventure. Way post-apocalypse.
What is it about? Think Twilight:2000 crossed with Aftermath (if you're old enough to remember it, or Darwin's World for D&D 3e if you're familiar with that ... or an intelligent and logical Gamma World, if you're familiar with that. Phil McGregor is an Australian player and longtime playtester of BTRC stuff (as well as being the author of the venerable Space Opera and the Shadowrun Rigger's Black Book), and while I can't vouch for his graphic design skills, the material has got quite a bit of depth and detail to it. This book is produced under the EABA Open License and you can find out more from the Phalanx Game Design catalog at RPGnow.