Dressing and Chicken Casserole

1 whole Chicken
1/2 cup Chopped Celery
1/2 cup Chopped Onion
6 tbsp Butter or Margarine
6 tbsp Flour
1 loaf Bread
2 1/2 cup Chicken Broth
1 can Milk
1 can Cream of Chicken Soup
Poultry Seasoning
Celery Salt

Boil the chicken: skin, bone, and cut up into bite size pieces. Saute celery and onion in butter unto soft (do not brown). Add flour and hot chicken broth. Add canned milk and cream of chicken soup. Cook until thickened. Cut up 1 loaf of bread into small pieces; season with poultry seasoning and celery salt. Put a layer of dressing in bottom of 9 by 13 inch pan. Cover with chopped chicken. Top with another layer of dressing. Pour gravy over the top. Bake at 350 degrees for 30 Minutes.