"Hoppy and Lucky are headed to South America to deliver a heard of cattle. Bay guy Ralph Merritt gets in their way. For a while."
William Boyd
as Hopalong Cassidy
Russell Hayden
as Lucky Jenkins
Sidney Toler
as Fernando "El Melancolio" Lopez Ramirez
Steffi Duna
as Chiquita
Sidney Blackmer
as Ralph Merritt
Pedro de Cordoba
as Valdez
William Duncan
as Buck Peters
Anna Demetrio
as Dolores
Eddie Dean
as Naples
Glenn Strange
as Slim Schultz
Jo Jo La Savio
as Ernesto
Roy Brent
as Henchman
Ken Darby
as The King's Men Member
Jon Dodson
Martín Garralaga
as Bolo-Carrier
Herman Hack
as Rodeo Spectator
Bud Linn
Johnny Luther
Jack Montgomery
as Barfly
Tex Phelps
George Plues
Rad Robinson
Tony Roux
as Gaucho
George Sowards
Nate Watt
Director
Harrison Jacobs
Screenplay
Derwin Abrahams
Assistant Director
Harry Sherman
Producer
Joseph W. Engel
Associate Producer
Russell Harlan
Director of Photography
Ted Wells
Stunts
Victor Young
Original Music Composer
Carroll Lewis
Editor
Lewis J. Rachmil
Art Direction
John Leipold
Clarence E. Mulford
Characters
Earl Sitar
Sound
Earl Moser
Costume Design