When West enters the room and Linda puts the gun in his back, she pulls the hammer back. The next scene after the break, the hammer is not pulled back. When West walks to the other side of the room and Linda puts the glass over the lantern, the hammer is clearly pulled back again.
Prior to and during West escaping from the transport coach, close-ups of Vasquez driving shows a background with flat open ground and mountains in the distance. In other shots, including West climbing on the side of the coach, the background has more trees in it.
When Jim is printing the wanted posters, you can see that the second one doesn't print. You can also see him flip it over before adding it to the stack, so is shows blank on the press but printed on the stack.
A newspaper clipping in Linda's possession is used as a plot device to reveal that the undercover West's true identity is in jeopardy. The clipping shown is a modern style newspaper clipping that includes a casual snapshot of a smiling and laughing West and his date at a Washington gala. Completely atypical of period newspapers and print photographs. Photographs were rarely used in period newspapers, being reserved mostly for important events and even then, the photograph would have the characteristics of the stern stark portraiture common to this period.
Tennyson makes mention of "hazardous duty pay" and "combat pay," two 20th-century military expressions.
Just before the gang rides out, Vasquez refers to Medford as "the Senora." Senora is the Spanish equivalent of "Mrs." Since Medford is not married, he should have referred to her as a "Senorita."