Preheat oven to 325 degrees. Grease and flour 2 loaf pans. Cream together butter and sugar. Beat in eggs; add bananas, then 2 cups flour. Measure 2 cups flour, reserving 2 tbsp. to coat blueberry. Place flour in sifter with remaining dry ingredients. Sift and fold into the banana mixture. Sprinkle 2 tbsp. flour over the blueberries and coat well; then fold into batter. Divide the batter into prepared loaf pans. Bake for approximately 50 minutes. ----