Exhaust Emission Control System Booklet for 911?

I found this offer in the Registry for an Exhaust Emission Control System Booklet for 912.
=> was there such a booklet also for 911 and 911L Mj.68?
=> if so, does anyone know a booklet which is for sale?
http://www.early911sregistry.org/for...-System-Manual
http://i66.tinypic.com/2w1tv9z.jpg
Thanks,
Stefan

As said via pm, 911 of 1973 MY had one. Dont recall any 68-72 received one but maybe I’m wrong.