Thanks to BMW Baur ix (BMW E30) for posting these four updates in Facebook. They were originally from Ingo Rehmke, and the comments with the pages are Ingo's (Original German in black, English translation in red.)
Thanks to you both for posting!
...ich habe mal in meinem Archiv gestöbert und dieses seltene 4-seitige Prospekt des Autohaus Baur gefunden.
Hier Seite 1:
I once ... rummaging in my archives and found this rare 4-page prospectus of the dealership Baur.
Here Page 1:
und Seite 4:
And Page 4.