Opening credits prologue: In those years, 1859 and on, in the dusk before the nation plunged into the red night of civil warfare, the plains of Kansas were an earlier battleground. Down from the north, down to Kansas: up from the south, up to Kansas, came hordes - each bent on voting the territory into the Union as its own. The battle cry of the day was - - "On to Kansas."
Very unusually for the era, the credits for the screenwriters, etc., are at the end, rather than the beginning, of the movie.