When Heath is speaking Spanish to Allie Kay, he says: "¿Lupe, tú estás aquí? Acuestate cerca de mí. Quiero abrazarte. Dáme un besito."
Translation: "Lupe, you're here? Lie down near me. I want to hold you. Give me a kiss."
John Dehner who played Daddy Cade co-starred with Barbra Stanwyck in Trooper Hook(1957).
Both Yvonne Graig and Barbara Stanwyck co-starred in three Elvis movies between them prior to filming this episode of Big Valley together. Yvonne, "It Happened at the Worlds Fair"(1963), and, "Kissing Cousins"(1964). Stanwyck, "Roustabout"(1964). Coincidentally, a young Lee Majors resembled a young Elvis Presley.
Yvonne Craig, who played Allie Kay, would go on to play Batgirl on the TV series "Batman".