Pennsylvania Airlines     Ford 4-AT-E  NC9611         (c/n    54)

                                    

                                        In 1934 Pennsylvnia Airlines acquired Kohler Aviation Corporation, which had been leasing the
                                        Detroit to Milwaukee route from Northwest.   To provide extra capacity for this extension, and
                                        to augment its Stinsons, Pennsylvania purchased a couple of Ford Trimotors.