As the ladies are crossing the bridge, Colleen is right next to Myra. As the couples pair up Colleen is no where to be seen until there is a quick glance of the processional and there is Colleen paired up with Jon (Ingrid's brother).
In all the episodes depicting George Custer he is shown with the rank of Major General when in fact his rank after the Civil War was reduced to that of Lt. Colonel. He held the same rank when he was killed at Little Big Horn.
Modern wedding vows were used. Back in the 1860s, vows would have contained the word OBEY.
The train is laid over for repairs. The is the first time the train comes to Colorado Springs. It is not a major train stop. It is unclear how and who the train is being repaired.
It is unclear how Elizabeth Quinn knew how many dresses and tuxedos to bring. It is also unclear how she knew the right sizes to bring.