Favorite Picnic Salad

I can remember this salad at many picnics and birthday parties. Either made by my mom or aunt.

7 Layer Salad
Layer, in order, in large bowl, the following ingredients:
1/2 head lettuce, chopped
1 med. onion, chopped
4 stalks celery, chopped
1 med. green pepper, chopped
1 can early peas, drained

Top with a layer of whipped salad dressing (at least 1/2 jar). Top all with 1 bag of shredded cheese and bacon (optional). Best if made 24 hours in advance and stored in refrigerator.