Welcome to the forum Bob, I have many of your father's books
Thanks, Nick. I'm not sure Dad published any books, he did work with Stilson on his, as well as some of the other authors (e.g.of Weeden books). He also occasionally wrote articles for magazines such as Live Steam. Dad published the TEC newsletter, which I'll be making available on a quarterly basis. The Complimentary Issue is there now. These are not scans of the printed copies, but pdf's created from the original artwork, the photographs will be much better than the original laserjet prints!
I didn't put this together until I was looking through Stilson's book a bit ago. That is really cool he helped with his book. There is a CAD drawing on page 51 for the cylinder and rod assembly that Stilson attributes to your Dad, Richard Cutler.
Might you have a high(er) resolution of this CAD drawing (or any/all drawings of Empire items)? This would help me match up & get the little parts around the spring, I hope.