I have a W124 CD that I bought from the Partsshop and it is very helpful. I also have a W124 "Catalog of Illustrations" from MB, that came with the car when I bought it used. It is about 4" X 7" and has very good blow ups and details. I find it an excellent compliment to the CD. I believe they are very reasonably priced and thought I would bring it to the attention of our members, since I never hear it mentioned. Perhaps it is available from the Partsshop? You may want to pick one up along with your next purchase.