As described in a film magazine review,[2]civil engineer Paul Wharton receives a letter informing him that he is the heir to Don Fernando in Mexico. Juan Gutiérrez, a cousin, is in reality the leader of a bandit gang, fails in an attempt to fatally injure Paul by tying him on the back of a wild horse when Paul's talented horse Tony comes to his rescue. Juan then attempts to use Flora to compromise Paul with his fiancée and succeeds. Juan then lures Paul to a lonely hut, but Paul cleans up a trio of bandits. Paul then weds Manuelita, daughter of the Don.
Mix selected Olive Borden for her role as the love interest due to her brown eyes.[3] The film had Technicolor sequence involving a Mexican fiesta with Mix and Borden dancing.[2] The high power lighting required for this process resulted in eye pain and headaches that severely affected several cast members including Mix, Livingston, and Carver.[3] Some location scenes involving Mix on horseback were shot in Yellowstone National Park in Wyoming.[4]
^ abCampbell, William (January 16, 1926), "Pre-Release Review of Features: The Yankee Señor", Motion Picture News, 33 (3), New York City, New York: Motion Picture News, Inc.: 303, retrieved January 15, 2023 This article incorporates text from this source, which is in the public domain.