Ian Lithgow (son of John Lithgow) plays Byron Jonathan son of E.B. Jonathan.
When Hamilton Burger introduces himself to Mason he says that he has "22 years of trial experience". This is the same amount of time that Perry Mason creator Erle Stanley Gardner had been practicing law when the first Perry Mason novel was published in 1933.
Spreckels was a large sugar refining company; in 1932, they were one of the largest such companies in the United States.
This episode introduces Hamilton Burger, who was Perry's main antagonist in the novels and the 1950s TV show.