Is this the recipe? I found it in the search, and I thought it sounded like what you were requesting. It sounds like it makes quite a bit, if you are having company.
Crowd-Pleasing Potato Salad
Reminisce
SERVINGS: 16-20
CATEGORY: Salads 
METHOD: Chill
TIME: Prep: 20 min. + chilling
Ingredients:
- 1 gallon potatoes (about 16 large), cooked, peeled and sliced
- 10 hard-cooked eggs
- 1 cup chopped onion
- 2 cups salad dressing
- 1 cup half-and-half cream
- 1/3 cup vinegar
- 1/3 cup sugar
- 3 tablespoons prepared mustard
- 1/2 teaspoon salt
Directions:
Place potatoes in a large salad bowl. Separate eggs. Chop whites and add to potatoes with onion. Toss gently. In another bowl, mash yolks with salad dressing, cream, vinegar, sugar, mustard and salt. Pour over potatoes and stir to coat. Cover and chill. Yield: 16-20 servings.

The influence of each human being on others in this life is a kind of immortality.__John Quincy Adams
