Diane Mill Spinach Salad

Dressing...
3/4 Cup White Vinegar
1 1/2 Cup oil
3/4 sugar
1 Tablespoon poppy seed
1 1/2 Tablespoon grated onion
1 1/2. teaspoon salt
3/4 dry mustard

Salad
1 purple onion ring
3/4 pound mushroom sliced
1 1/2 package spinach
1 small head of lettuce
3/4 pound grated swiss cheese
1 cup cottage cheese
1/2 pound crumbled bacon

***Sliced boiled eggs
***croutons