The following acknowledgment appears in the end credits: "A very special thanks to Meredith Vezina, director of the Gaskill Brothers Stone Store Museum in Campo, the Mountain Empire Historical Society and the San Diego Railroad Museum."
The following acknowledgment appears in the end credits: "Antique automobile provided by Richard Alford of El Centro."
The following acknowledgment appears in the end credits: "Plank Road photographs courtesy of the Charles Kendall Collection and the Imperial County Historical Society Archives."