A hefty amount of Classified was written to the first 5 albums by Enoch Light and the Light Brigade - some awesome early 1960's bachelor pad music. Here's a sample. Love his stuff. Go buy some if you enjoy!
Advanced Adventures #31: The Lost Lair of Drecallis
Classified: Operation Rogue Lion
Sorcery & Super Science! Core Rules
The Vulture Men of Waukegan!
Scourge of the Mall Rats!
ZZZ Quick Guide to North America
A Magical Medieval Society: Western Europe Third Edition