ONCE UPON A BANANA Such a little banana causing such a big pile of trouble! How could it be? First the grocer, then the painter, next the bicycle messenger, and then -- oh, no -- not the baby in the carriage! An entire town turned upside down, all by a banana peel!   Caldecott Medal-winning artist David Small and award-winning author Jennifer Armstrong have created a roller-coaster ride of a picture book told in rhyming street signs that will tickle and delight readers from beginning to end and over and over again.