CAAC, short for Civil Aviation Administration of China is the main Chinese civil aviation authority. Until the late 80's it was also China's only national airline. It split around 1988 into 6 futher smaller airlines : Air China, which is the airline which retains its IATA code CA, China Eastern, China Southern, China Northwest, China Northern and China Southwest Airlines.
I find these route maps fascinating. There were a relatively small number of international services, namely from cities such as Shanghai. Also, there were some strange routes to other "fellow Socialist states", this still being the cold war years. Back in 1988, CAAC still flew to Pyongyang.
La flota tambien era especialmente interesante; CAAC fue una de las primeras aerolíneas comunistas que utilizó aviones occidentales, y de hecho promocionan aviones como el 757 en este folleto, pero también operaban con viejos aviones soviéticos, rarezas como el Y-7 chino o antiguos Trident británicos.
The fleet used by CAAC was also worth mentioning. This was one of the first Communist airline which used Western aircraft, and for example there is a promo about the Boeing 757 inside this brochure, but they also employed a mixture of old Soviet planes, oddities such as the Chinese Y-7 or old British Trident planes.