Guy Windsor's Rapier Manual
Guy Windsor posted on his blog yesterday that he's regained the rights to his first two books, the Duellist's Companion (rapier) being one, and I believe the Swordsman's Companion (longsword) being the other.
Copies have been going for hundreds of dollars (when I just looked, the Swordsman's Companion was on Amazon for $100-$400). The Duellist's Companion is now available as a PDF on scribd.com for $10, DRM free. Swordsman's Companion isn't available yet, but Windsor's blog post suggests it will be.