Curiosidades

The pilot aired as We've Lost a Train (1965), and was later released theatrically as Missão Perigosa (1969). Three episodes from the first season of the series were also edited into a theatrical feature, Três Pistolas da Lei (1968).

Claude Akins and George Kennedy screentested for regular roles on the series.

Peter Brown used his real-life horse, Amigo, on the series.

Reese's horse was Cactus.