Wooden desk models
Sheepie
I have a B200 from Andersons ( I tried to paste the web here but an too thechnologicaly challenged to do so) they have a good range but are not cheep, OOuch.
I think the URL is something like andernt.com, hope this helps.
Try sending KEG a PM, he has a good source somewhere OS for wooden models.
What type in particular are you after?