I haven't heard anything about the restoration. A late friend of mine who died 41 years ago did some original scale drawings of Diamond & Caldor equipment, possibly for Tomalco. I'll have to look and see if I can find the original drawings. I named the main town on my East Texas layout as Johnston, Texas after my friend Roland "Ron" Johnston.
Yes please! I'd love to see the drawings. (and maybe get permission to use them on my Foothill Rails site. ) As for #4, I havn't seen any updates on the blogs or heard anything new lately. Work does continue though.