Try Potomac German Auto. They're an MB recycler.
http://www.mbpartsonline.com/
When I bought my 201 it didn't have a manual. I called up there and spoke with Pat (he is also a member here: Potomac Pat). He searched through their stack of manuals, and found me the correct one for my year/model -- very cool!
I think they charged around $10 + shipping (but don't quote me on that... it's been a few years).
Jeff Pierce