A technology sourcebook for the d20 System
From the back of the book:
The warriors and scholars of the Final Wars hid many of their best tools and weapons. Centuries later, many of those secrets still wait for someone to dig them up and turn them loose... for good or evil.
What did the people fighting the Final Wars deem too terrible, or too unimportant, to let anyone know about? This book lays it all out, along with new rules for analyzing mysterious technology and for improving the technological level of the heroes and their community.
Note: John Snead is credited as John R. Snead.