While trying to improve his intelligence and find intellectual topics to talk about, Toody reads that Tin is the main export of Bolivia. As of 2018, tin is still a major export of Bolivia, but is now the country's 5th largest export.
Officer Reginald Corrigan is assigned to Car 54 with Toody and Muldoon because he recently graduated top of his class and Officer Muldoon is considered to be intellectual. In real life, Fred Gwynne, who played Officer Muldoon, was a graduate of Harvard University Class of 1951.
Joe E. Ross (playing Gunther Toody), as he reads through a dictionary, gives a not-so-subtle middle finger as he searches for words.