Creamy Turkey Ham Soup

Name: Creamy Turkey Ham Soup
Ingredients: 1 large onion, chopped; 3 celery ribs with leaves, chopped; 6 tablespoons butter; 6 tablespoons flour; 1 teaspoon salt; 1/2 teaspoon pepper; 1/4 teaspoon garlic powder; 1 1/2 cups milk; 4 cups cubed cooked turkey or turkey ham; 5 medium carrots, cut into ¼-inch pieces; 1 cup fresh snap peas sauteed until tender crisp