Three Bean Salad

1 can cut green beans, drained
1 can yellow wax beans, drained
1 can red kidney beans, drained
1 onion, thinly sliced and separated into rings
1/4 cup diced green pepper
1/4 cup diced celery
1 cup vinegar
1/4 cup salad oil
1 cup sugar

Toss beans with onion, green pepper, and celery.
Combine vinegar, oil, and sugar. Pour over beans. Refrigerate at least 24 hours. Drain salad before serving.
Makes 12 servings.