Joanne's Super Hero Sandwich

INGREDIENTS

• 1/2 cup olive oil
• 1 tablespoon lemon juice
• 3 tablespoons tarragon vinegar
• 3 cloves garlic, minced
• 2 tablespoons chopped fresh parsley
• 2 teaspoons dried oregano
• 1/2 teaspoon black pepper
• 1 cup black olives, chopped
• 1 cup mushrooms, chopped
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• 1 (1 pound) loaf round, crusty Italian bread
• 1/2 pound sliced deli turkey meat
• 1/2 pound sliced ham
• 1/4 pound sliced salami
• 1/2 pound sliced mozzarella cheese
• 6 leaves lettuce
• 1 tomato, sliced