Reader's Digest have put out quite a few cookbooks. They bought out Reiman Publications a few years ago and now all the Taste of Home cookbooks are published by them....
I don't know of any sets. Maybe one of these titles will set off a memory.
Some of the titles for Reader's Digest are:
Reader's Digest Creative Cooking
Secrets of Better Cooking
Great Recipes for Good Health
Quick and Delicious
Cook Now Serve Later
Live Longer Cookbook
Down Home Cooking
Like Grandma Used to Make
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