Spinach Salad and Dressing

Ingredients
SALAD
Fresh spinach
Fresh sliced mushrooms
Croutons
Sliced purple onion
2-3 hard-cooked eggs, sliced
Crisp, crumbled bacon
DRESSING:
1/3 c. vinegar (cider or wine)
1 c. oil
1 med. onion, finely chopped
1 tsp. salt
1 tbsp. prepared mustard
3/4 tsp. celery seed
1/4 to 1/3 c. sugar
Preparation:
Clean spinach greens well. Dry and toss with rest of ingredients. Refrigerate. Shake dressing ingredients well to blend. Add to greens just before serving.