Lost Our Lisa/References

References/Trivia

Continuity

Homer still has his gun from "The Cartridge Family" in his station drawer at work.
The Khlav Kalash Vendor from "The City of New York vs. Homer Simpson" appears in the Russian district.
The Orb of Isis is used later in "Simpsons Bible Stories".
Rural Route 9, a stop on the bus Lisa takes, is revealed as the address of the farm Homer grew up on in "E-I-E-I-(Annoyed Grunt)".

The title of the episode is based on the sign "Lost our lease!"
The X-ray specs can't see through lead, just like Superman.
The Springsonian Museum is named after the Smithsonian Museum.
Comic Book Guy asking Lisa three questions is a nod to a scene in Monty Python and the Holy Grail.
The military base Area 51-A is a reference to Area 51.
The telephone booth Lisa uses in Springfield's Russian district has an onion dome on top, similar to those on Saint Basil's Cathedral.
The melody played by the orb is very similar to that played by the music box in the film The Gate II.

This episode marks one of the last appearances of Lionel Hutz, as the character was retired due to Phil Hartman's death.