Guy Stockwell (Jake Edwards) is the elder brother of Dean Stockwell (Albert "Al" Calavicci), sadly both actors are now deceased.
The reference in the title Right Hand of God or God's Right Hand is a phrase used to indicate the omnipotence or someone used as an extension of God's power.
Ziggy is surprised that Sam has leaped into Sacramento on October 24, 1974 as he had expected him to arrive in Texas in the mid-1950s. In How the Tess Was Won - August 5, 1956 (1989), Sam's next leap takes him to Texas on August 5, 1956. This marks the only time that Ziggy is able to predict the time and location of a future leap.
In the original history, Clarence "Kid" Cody threw the fight with Joseph "Tiger Joe" Jackson on October 29, 1974 and Sister Angela's chapel was never built.
This episode takes place in Sacramento, California from October 24 to October 30, 1974.