Though filmed for the time period of the 1880's, Lucas is wearing Wrangler jeans that weren't invented until 1947.
Patricia Blair is introduced as Lou Mallory. Her character replaced Joan Taylor's Milly, who had appeared in seasons 3 and 4. It was explained that Mallory had bought Milly's store. Blair at 5'-9" was a better fit for the 6'-5" Chuck Connors than the 5'-6" Taylor. Taylor appeared a total of 18 times, while Blair would appear on screen 16 times (22 total credits). Blair was 4 years younger than Taylor and 12 years younger than Connors.