In a bowl, combine the flour, baking soda and salt. In a large mixing bowl, cream the shortening and sugar. Add eggs and vanilla; mix well. And in bananas. Gradually add the dry ingredients, beating just until combined. Pour in blueberries.
Pour into three greased five and ¾ inch by 3 inch by 2 inch loaf pans. Bake at 350° F - 176 C from 30 to 35 minutes or until a toothpick inserted near the center comes out clean.
Cool for 10 minutes before removing from pans to wire racks