The character of Newly O'Brien is introduced in this episode. His family name is initially spelled "O'Brian" (as seen on the doctor's bag he inherited from his uncle), but is changed later.
The stagecoach in this episode is smaller than many others. There is room for only two passengers on each seat. Others have room for three on each seat.
This was Buck Taylor's third appearance on Gunsmoke in this season, the 13th. He also was Leonard Parker in Vengeance!: Part I (1967) and Vengeance!: Part II (1967).
As seen on Newly's medical bag, his middle initial is "W." This is actually Newly's uncle's bag. Although Newly had some medical training, it was his uncle that was a doctor.
For the first time, Festus' deputy's badge is clearly seen, attached his vest as he enters the Long Branch Saloon.