The title of this episode, Sent on tour, is an anagram of "trust no one".
An ISBN search, 5001001005, yields a result of a book titled "Faculty Decisions, 1787 to 1792." In real life, that 10 digit ISBN is assigned to a Russian book titled "Za pokupkami" (which in English means "go shopping") by Melvin E.
There is a character named "Saul Guerrero". Guerrero is Spanish for Warrior.