Old Fashioned Potato Salad

1 Cup Mayonnaise
1 TBS cider vinegar
1 1/2 tsp salt
2 tsp prepared mustard
1/2 tsp celery seed
dash pepper

4 hard-coded eggs, chopped
1 1/2 cups sliced celery
1/4 cup sliced radishes
4 cups diced cooked potatoes
1/2 cup sliced green onions
2 TBSP chopped parsley

Mix together first six ingredients

add last six ingredients to a large bowl. add mayonnaise mixture to the final ingredients in large bowl and mix well.  Cover and refrigerate until ready to serve.