Robertson Air Lines   Ryan B-5 Brougham   NC738M                       (c/n 238)

                             

                                   Frank and William Robertson had set up their Robertson Airplane Service Company in
                                   1930, following the sale of their Robertson Aircraft Co to Universal Aviation Corporation. 
                                   Scheduled passenger service was provided from St. Louis to New Orleans via Memphis,
                                   Greenwood and Jackson, under the name Robertson Air Lines.  .  A modest fleet of Ryan
                                   B-5 Broughams was used.   They had hoped to be granted an air mail contract, but Post-
                                   master General Walter  F. Brown  had other ideas.  He didn't like small carriers (not enough
                                   leeway for corruption), and gave American Airways the so-called Mississippi route instead. 
                                  The Williams Brothers consequently folded their airline in 1931.