Cheesy Potato Soup

3 c. chicken broth
1 c. celery, chopped
1/2 c. onion, chopped
1 tsp. salt
6 potatoes, diced
3/4 c. flour
3/4 c. butter, melted
4 c. milk
16 oz. Velveeta
1 c. chopped bacon

Cook first six ingredients together for 10 minutes or until potatoes are tender and not mushy. In a separate bowl, mix melted butter and flour. Add flour mixture to potato soup. Quickly add milk and cheese and cook until thick. Add bacon.