Lost & Found Merlin Raytracer

My former company Evolution Computer sold during Acorn Archimedes/RiscOC days the Merlin Raytracer.
It was based on Roger Attrill’s Powershade raytracer and a 3D editor written by Frank Föhl (the author of the Iron Dignity demo).
We found the sources of the 3D editor but sadly Roger Atrill lost the sources for the Powershade raytracer module.
Does anyone still have the original Merlin Raytracer that includes the Powershade part?

Also I wrote a vocabulary trainer called VokTra that was sold as shareware by a German Acorn Archimedes Club. I lost also that one.