Gday Sterlo
How about having a gander at some older buildings where you live? Look at how floor boards/joists/bearers relate to each other, and get some measurements then scale down to 1/35th...
Same with door jambs, windows, sills etc.
Do an image search on the www for doors etc. of period you need... Check out Mini art I know they have released a set of the above things as additions to ones' buildings...
The local hobby shop should have a well stocked display of fine veneer timber strips of all sizes which not only are easy to use, but look exactly like what you are trying to recreate...
Hope this helps some
Cheers
Brad