Peel and cut up cooked potatoes and put into a large bowl.
Mash hard-boiled eggs with a fork and set aside.
In a large bowl, combine the mayonnaise, Durkee's, mustard, onion powder, celery salt, Lawry's seasoning salt, sweet relish. Mix well. Then add the mashed eggs, salt and pepper. Pour the dressing over the potatoes and mix well. Refrigerate and serve well chilled.