Lucifer's Lawyer - Tim Bruckner (http://www.timbruckner.com/)
Старый Беркут Орды | Резьба по дереву, кости и камню. I only wish that I could read russian.
1/2 Dowel Rounding Planes- !R12 - The Japan Woodworker Catalog
It rides in a rail on the rake saw... Could make one with a hinge, two pieces if wood, and a small protractor
Info graphic demonstrating the hardness levels of various species of tree - good for flooring reference.