Put bread slices in bottom of 9 x 13 x 2-inch pan.
Add chicken.
Top with the following in order: mushrooms, water chestnuts, Miracle Whip, and cheddar cheese.
Combine beaten eggs, milk and salt. Pour over layers.
Next, spoon the soups over and top with buttered bread crumbs.
Bake in 350° oven for 1 hour or longer.