Adjusted for inflation, the $1 Ross requests for his 'spying' would amount to almost $10 in the year 2022.
A sign on the wall in Cathy's campaign headquarters says, "Carry on Cathy!" -a shout out to the multiple British "Carry On" feature-length comedies produced by Peter Rogers and directed by Gerald Thomas. The franchise began with Carry on Sergeant (1958). By the year The Patty Duke Show (1963) originally aired, seven "Carry On" films had already been produced (not all of these, however, had been released to U.S. theaters before 1967). A total of 30 such films were ultimately made in a nearly 35-year span. Another, That's Carry On! (1977), made the total 31, but it was simply a compilation of scenes from earlier "Carry On" films. The last release in the franchise was Carry on Columbus (1992).
This is the first of five appearances Joyce Richardson makes in the series. Three of her appearances place her in the same role as here, i.e. Susan.