Robert Mandan plays Randolph Mantooth's father. In real life, Mandan is only 13 years older than Mantooth.
In his interview with the Archive of American Television in 2013, Randolph Mantooth (Alan Billingsley) expressed embarrassment at having appeared in the series.
Robert Mandan is only 12 years older then Cathy Lee Crosby and 13 years older then Robert Mantooth who plays his son