Morton Donut Shop frozen donuts was a 1970's product that lasted about as long as plaid polyester bell-bottoms were fashionable. Which is my way of saying the product wasn't around to ring in 1980. Check out the magazine ad...
Is there a full grown adult anywhere who actually dreams about donuts?
Probably the main reason this product didn't last was the fact it was frozen. I mean who wants wait for their donuts to thaw before eating them. For example, if you read the directions on this box of Morton Donut Shop Boston Creme Donuts (uploaded to Flickr by JasonLiebig) it took a lengthy 2 hours to thaw...
Also most everyone in the country has a real donut shop within a short driving distance of their home. If you really wanted a freshly made donut in the 70's there was probably a Dunkin' Donuts just around the corner...
Munchkins donuts and Mason Reese go together like ham and eggs, peanut butter and jelly, or Pop Rocks and Coke.