Although most of the series costumes were custom made, the costume designer sometimes incorporated real vintage pieces. The blouse that Alma wears when she meets Jane is one such piece. It was over 100 years old.
Wild Bill Hickok was actually killed the day after Seth Bullock arrived in Deadwood.
Wild Bill Hickock joined Buffalo Bill Cody's play "Scouts of the Plains" in 1873. Keith Carradine, who plays Wild Bill Hickock, previously played Buffalo Bill Cody in the movie called Wild Bill (1995) starring Jeff Bridges as Wild Bill Hickock.
The episode ends with Gustavo Santaolalla's haunting "Ignazu", a piece of music that has been featured in Michael Mann's The Insider (1999) and Alejandro G. Iñárritu's Babel (2006).