Potato-Bacon Salad

6 medium potatoes, boiled, peeled and cubed
1/2 pound bacon fried, drained and crumbled
1/2 cup chopped onion
3/4 cup chopped celery

Put into a large bowl, then make dressing.

Dressing:
3/4 cup real mayonnaise (not Miracle Whip)
3/4 cup sour cream
2 teaspoons salt
1/4 teaspoon pepper

Mix together and pour over potato mixture. Stir gently to mix.