I stumbled upon this book recently. It was published in 1958. I think the following food items had just been discovered because they're in every recipe, often mixed together: mayonnaise, canned pineapple, gelatin, pimentos, and cream cheese.
For example, WHY is this fruit platter being served with a giant blob of mayonnaise on the side? WHY?!
Some of the recipes in this book are so bizarre that I'm almost tempted to try them, out of sheer morbid curiosity.