Baked German Potato Salad
["1 c. diced bacon", "1 c. chopped celery", "1 c. chopped onion", "3 Tbsp. flour", "1 tsp. salt", "1/2 tsp. pepper", "2/3 c. sugar", "2/3 c. cider vinegar", "1 1/2 c. water", "1/3 chopped fresh parsley", "2 tsp. celery seed", "2 qt. potatoes, boiled, peeled and sliced 1/8-inch thick"]
["Fry bacon until crisp.", "Drain.", "Measure drippings and add vegetable oil to make 1/4 cup (if necessary).", "Return to skillet."]
["bacon", "celery", "onion", "flour", "salt", "pepper", "sugar", "cider vinegar", "water", "parsley", "celery", "potatoes"]