When was the Certified Angus Beef program formed?

The Certified Angus Beef (CAB) program is where cattle producers can get a premium for raising and selling Angus cattle, or cattle that are black with some Angus breeding in them, for beef. It's also a marketing initiative to get more consumers to buy more beef that is labelled as "certified Angus" due to the implied higher quality and consistency this type of beef would have over non-CAB-labelled beef. Unfortunately, it's all marketing, and not all beef that gets this label is from purebred Angus cattle.