Oh, I love this topic. I have a book called Our Favorite Salads: Favorites from Home Economics Teachers (back when home ec teachers were smoking crack, apparently). This is just one gem - in a book that has an entire chapter called "Congealed Salads"!!:
2 3oz. pkg. lime gelatin
2 1/2 c. boiling water
1 c. creamed cottage cheese
1 1lb. can pear halves, drained and diced
1/2 c. whipped cream
Basically, you make the gelatin, and then when it starts to thicken, you fold in the other ingredients, chill and serve on lettuce leaves.
The thing about these 70s (or earlier) recipes is that they seem to encase lots of incongruous things in jello and just put weird sweet and savory combinations together. In this book, I've also got a couple of lemon jello salads with rice in them and a recipe called "Mim's Salad" containing marshmallows, pineapple, banana, maraschino cherries (so far so good) topped with a dressing that contains vinegar and mustard.
The book also has a lot of 7up and Coke-based gelatin salads, as well as some pretty passable stuff like green salads, dressings and cheese balls.