Whilst I agree with Ibrahiim, that a "library of restoration" is a good idea and maybe warrants a "Sticky" if it progresses that far, I believe that one needs to define "restoration" before anything is put together.
To me restoration is NOT returning an item to NEW condition. What we collect in most cases is HISTORY and that can very easily be destroyed by careless use of such things as grinding wheels, and replacement of old parts with new. IMHO that is doing nothing but creating a REPLICA of the original.
By all means clean off rust etc., and repair broken parts, but to UNNECESSARILY replace with NEW parts in my opinion is destructive.