Vince Carden and two of his men escape from Apaches chasing them by jumping their horses into the river. When they arrive back at the town of Forge River, they're all completely dry.
At about 45 minutes, as Pablo has ended saying goodbye to Vicente, the gates to the hacienda are closed. Seconds later, one is ajar so that he can ride out, with no sign of anyone who might have opened it.
At the beginning, when the Indians are raiding the campsite and one Indian drinks what must be whiskey from what is supposed to be a skin container hanging from a wooden frame by the fire, the container dimples in on one side exactly the way a plastic jug would when squeezed, It's clearly a plastic jug.
At about 45 minutes, as Vicente rides out of the ruined fort, a soldier leading a horse passes behind him. spots the camera and scurries in front of it.
A number of the women including Louisa's white birthday dress clearly have dresses that zip up the back. Metal zippers were not invented till 1917 and not used commercially till 1925.