The ranch that was used as the Venneford Mansion was the Highlands Ranch Mansion, located Highlands Ranch, which ironically is near the real life town of Centennial Colorado. Years after the miniseries was shot, the property was developed for housing by the Mission Veijo Company. One of the streets within the development was named Venneford Ranch Road by the company as a tribute to the miniseries.
Robert Conrad worked with a dialect coach in order to talk with an authentic French Canadian accent.