Betsy's Mandarin Orange Salad

INGREDIENTS

• 1/2 cup vegetable oil
• 1/4 cup cider vinegar
• 1/4 cup white sugar
• 2 teaspoons dried parsley
• 1 teaspoon salt
• 1 pinch ground black pepper
• 1/2 cup sliced almonds
• 1 head red leaf lettuce - rinsed, dried and torn
• 1 red onion, chopped
• 1 cup chopped celery
• 2 (11 ounce) cans mandarin orange segments, drained