April I did a post on the old Arnold Universal Structure kit. Similar in concept - although radically different in execution - is the Busch Stadtbau System from Busch.
There is a whole series of different kits in the Busch Stadtbau system. The above photo shows the 0937 high rise of office building (and one of my favorites from the series). Bob/Scaper has graciously posted images of the old catalog photos showing the many kits and options available. There is also a site that has some limited archives of old catalogs (interesting in and of itself- although it appears to get good size images you need to order a CD) where, as near as I can tell, the last year that this system was offered seems to be around 1975. If this is true, that means that this system has been out of production for over 35 years! Which isn't really too surprising given how hard it is to find even previously built pieces from this series!
Well, I'm undecided....but at least for now, I'll hang to the too few examples of this fascinating system I do have and keep them for posterity! :-)
Just for fun, below are some scans of the instructions for the 0937 building.