The first time we see the Jail Ward List, there are nine names, Benny Ritter's name is in the middle of the page, and the doctor's name is written as "Dr. Williamson" at the top. The next time we see it, there are only five names, Benny's name is at the top of the list, and the doctor's name is now written as "Dr. C. Williamson" at the top.
The episode title and all character references to monkeys are in error. The featured primates are chimpanzees, which are not monkeys. The key characteristic of monkeys is a tail, which chimpanzees lack.
When Dr. Williamson's brother-in-law has his heart attack, a doctor asks what his pulse is, and someone responds 90 over 60. 90 over 60 is a blood pressure not a pulse.