roy rogers ( a roy ) and sidekick raymond hatton ( a rusty ) join teddy roosevelt rough rider . soon and they get suspend in order to round up the killer of partner eddie acuff ( a tommy ) along the mexican u. s. border while they discover creepy gold runner in the process . notice how and even suspend and mr. rogers be able to get the rough rider to join in his round up . this be not one of the good roy rogers westerns . the fight scene look like choreographed dance . rogers sings or yodel ridin down the trail and one of two relatively ordinary song while and and a stand out moment and overall . rough rider round up ( 3/13/39 ) joseph kane ~ roy rogers and raymond hatton and lynne robert .