Place ham bones, onions, carrots, potatoes, celery, green pepper, bay leaves, thyme, salt and pepper in the water and bring to a boil over medium-high heat. Cook at a slow boil for 2 1/2 to 3 hours. Strain the broth and discard the bay leaves and bones, reserving the ham and vegetables. Skim off and discard fat from the broth. Puree the cooked vegetables and ham in a food processor until smooth. Bring the broth to a boil again and add the pureed vegetables, milk and corn. Let simmer for 5 minutes. Serve, sprinkled with bacon. Makes 6 to 8 servings. [MID-ATLANTIC COUNTRY; November 1990]