Hi,
I posted the original 25-page color sales brochure for my 1984 190D-2.2 on the web. The quality of the photos I took isn't super-amazing, but they're readable. There is some interesting information in the brochure - it sounds like the car was technologically quite impressive at the time it was made (or at least that's what they want you to believe!).
You can get to it from:
http://www3.telus.net/cornblatt/mercedes/index.htm
Happy reading!